Add Recall Knowledge DC and skill to PF2e stat blocks

Display Recall Knowledge line below trait tags showing DC (from level via standard DC-by-level table, adjusted for rarity) and associated skill derived from creature type trait. Omitted for D&D creatures and creatures with no recognized type trait. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add PF2e spell description popovers in stat blocks
2026-04-10 18:43:49 +02:00 · 2026-04-10 16:18:08 +02:00 · 2026-04-10 16:17:30 +02:00 · 2026-04-09 01:07:45 +02:00
27 changed files with 1672 additions and 192 deletions
--- a/apps/web/src/tests/app-integration.test.tsx
+++ b/apps/web/src/tests/app-integration.test.tsx
@@ -33,8 +33,7 @@ async function addCombatant(
 	opts?: { maxHp?: string },
 ) {
 	const inputs = screen.getAllByPlaceholderText("+ Add combatants");
-	// biome-ignore lint/style/noNonNullAssertion: getAllBy always returns at least one
-	const input = inputs.at(-1)!;
+	const input = inputs.at(-1) ?? inputs[0];
 	await user.type(input, name);

 	if (opts?.maxHp) {
--- a/apps/web/src/tests/confirm-button.test.tsx
+++ b/apps/web/src/tests/confirm-button.test.tsx
@@ -198,21 +198,23 @@ describe("ConfirmButton", () => {

 	it("Enter/Space keydown stops propagation to prevent parent handlers", () => {
 		const parentHandler = vi.fn();
-		render(
-			// biome-ignore lint/a11y/noStaticElementInteractions: test wrapper
-			// biome-ignore lint/a11y/noNoninteractiveElementInteractions: test wrapper
-			<div onKeyDown={parentHandler}>
-				<ConfirmButton
-					icon={<XIcon />}
-					label="Remove combatant"
-					onConfirm={vi.fn()}
-				/>
-			</div>,
-		);
-		const button = screen.getByRole("button");
+		function Wrapper() {
+			return (
+				<button type="button" onKeyDown={parentHandler}>
+					<ConfirmButton
+						icon={<XIcon />}
+						label="Remove combatant"
+						onConfirm={vi.fn()}
+					/>
+				</button>
+			);
+		}
+		render(<Wrapper />);
+		const buttons = screen.getAllByRole("button");
+		const confirmButton = buttons.at(-1) ?? buttons[0];

-		fireEvent.keyDown(button, { key: "Enter" });
-		fireEvent.keyDown(button, { key: " " });
+		fireEvent.keyDown(confirmButton, { key: "Enter" });
+		fireEvent.keyDown(confirmButton, { key: " " });

 		expect(parentHandler).not.toHaveBeenCalled();
 	});
--- a/apps/web/src/adapters/tests/bestiary-adapter.test.ts
+++ b/apps/web/src/adapters/tests/bestiary-adapter.test.ts
@@ -181,17 +181,20 @@ describe("normalizeBestiary", () => {
 		expect(sc?.name).toBe("Spellcasting");
 		expect(sc?.headerText).toContain("DC 15");
 		expect(sc?.headerText).not.toContain("{@");
-		expect(sc?.atWill).toEqual(["Detect Magic", "Mage Hand"]);
+		expect(sc?.atWill).toEqual([
+			{ name: "Detect Magic" },
+			{ name: "Mage Hand" },
+		]);
 		expect(sc?.daily).toHaveLength(2);
 		expect(sc?.daily).toContainEqual({
 			uses: 2,
 			each: true,
-			spells: ["Fireball"],
+			spells: [{ name: "Fireball" }],
 		});
 		expect(sc?.daily).toContainEqual({
 			uses: 1,
 			each: false,
-			spells: ["Dimension Door"],
+			spells: [{ name: "Dimension Door" }],
 		});
 	});

--- a/apps/web/src/adapters/tests/pf2e-bestiary-adapter.test.ts
+++ b/apps/web/src/adapters/tests/pf2e-bestiary-adapter.test.ts
@@ -593,11 +593,11 @@ describe("normalizeFoundryCreature", () => {
 			const sc = creature.spellcasting?.[0];
 			expect(sc?.name).toBe("Primal Prepared Spells");
 			expect(sc?.headerText).toBe("DC 30, attack +22");
-			expect(sc?.daily).toEqual([
-				{ uses: 6, each: true, spells: ["Earthquake"] },
-				{ uses: 3, each: true, spells: ["Heal"] },
-			]);
-			expect(sc?.atWill).toEqual(["Detect Magic"]);
+			expect(sc?.daily?.map((d) => d.uses)).toEqual([6, 3]);
+			expect(sc?.daily?.[0]?.spells.map((s) => s.name)).toEqual(["Earthquake"]);
+			expect(sc?.daily?.[1]?.spells.map((s) => s.name)).toEqual(["Heal"]);
+			expect(sc?.atWill?.map((s) => s.name)).toEqual(["Detect Magic"]);
+			expect(sc?.atWill?.[0]?.rank).toBe(1);
 		});

 		it("normalizes innate spells with uses", () => {
@@ -633,13 +633,334 @@ describe("normalizeFoundryCreature", () => {
 			);
 			const sc = creature.spellcasting?.[0];
 			expect(sc?.headerText).toBe("DC 32");
-			expect(sc?.daily).toEqual([
-				{
-					uses: 1,
-					each: true,
-					spells: ["Sure Strike (\u00d73)"],
-				},
-			]);
+			expect(sc?.daily).toHaveLength(1);
+			const spell = sc?.daily?.[0]?.spells[0];
+			expect(spell?.name).toBe("Sure Strike");
+			expect(spell?.usesPerDay).toBe(3);
+			expect(spell?.rank).toBe(1);
+		});
+
+		it("preserves full spell data including description and heightening", () => {
+			const creature = normalizeFoundryCreature(
+				minimalCreature({
+					items: [
+						{
+							_id: "entry1",
+							name: "Divine Innate Spells",
+							type: "spellcastingEntry",
+							system: {
+								tradition: { value: "divine" },
+								prepared: { value: "innate" },
+								spelldc: { dc: 35, value: 27 },
+							},
+						},
+						{
+							_id: "s1",
+							name: "Heal",
+							type: "spell",
+							system: {
+								slug: "heal",
+								location: { value: "entry1" },
+								level: { value: 6 },
+								traits: {
+									rarity: "common",
+									value: ["healing", "vitality"],
+									traditions: ["divine", "primal"],
+								},
+								description: {
+									value:
+										"<p>You channel @UUID[Compendium.pf2e.spells.Item.Heal]{positive} energy to heal the living. The target regains @Damage[2d8[vitality]] Hit Points.</p>",
+								},
+								range: { value: "30 feet" },
+								target: { value: "1 willing creature" },
+								duration: { value: "" },
+								defense: undefined,
+								time: { value: "1" },
+								heightening: {
+									type: "interval",
+									interval: 1,
+									damage: { value: "2d8" },
+								},
+							},
+						},
+						{
+							_id: "s2",
+							name: "Force Barrage",
+							type: "spell",
+							system: {
+								location: { value: "entry1" },
+								level: { value: 1 },
+								traits: { value: ["concentrate", "manipulate"] },
+							},
+						},
+					],
+				}),
+			);
+			const sc = creature.spellcasting?.[0];
+			expect(sc).toBeDefined();
+			const heal = sc?.daily
+				?.flatMap((d) => d.spells)
+				.find((s) => s.name === "Heal");
+			expect(heal).toBeDefined();
+			expect(heal?.slug).toBe("heal");
+			expect(heal?.rank).toBe(6);
+			expect(heal?.range).toBe("30 feet");
+			expect(heal?.target).toBe("1 willing creature");
+			expect(heal?.traits).toEqual(["healing", "vitality"]);
+			expect(heal?.traditions).toEqual(["divine", "primal"]);
+			expect(heal?.actionCost).toBe("1");
+			// Foundry tags stripped from description
+			expect(heal?.description).toContain("positive");
+			expect(heal?.description).not.toContain("@UUID");
+			expect(heal?.description).not.toContain("@Damage");
+			// Interval heightening formatted and not duplicated in description
+			expect(heal?.heightening).toBe("Heightened (+1) damage increases by 2d8");
+
+			// Spell without optional data still has name + rank
+			const fb = sc?.daily
+				?.flatMap((d) => d.spells)
+				.find((s) => s.name === "Force Barrage");
+			expect(fb).toBeDefined();
+			expect(fb?.rank).toBe(1);
+			expect(fb?.description).toBeUndefined();
+			expect(fb?.usesPerDay).toBeUndefined();
+		});
+
+		it("formats fixed-type heightening levels", () => {
+			const creature = normalizeFoundryCreature(
+				minimalCreature({
+					items: [
+						{
+							_id: "entry1",
+							name: "Divine Prepared Spells",
+							type: "spellcastingEntry",
+							system: {
+								tradition: { value: "divine" },
+								prepared: { value: "prepared" },
+								spelldc: { dc: 30 },
+							},
+						},
+						{
+							_id: "s1",
+							name: "Magic Missile",
+							type: "spell",
+							system: {
+								location: { value: "entry1" },
+								level: { value: 1 },
+								traits: { value: [] },
+								heightening: {
+									type: "fixed",
+									levels: {
+										"3": { text: "<p>You shoot two more missiles.</p>" },
+										"5": { text: "<p>You shoot four more missiles.</p>" },
+									},
+								},
+							},
+						},
+					],
+				}),
+			);
+			const spell = creature.spellcasting?.[0]?.daily
+				?.flatMap((d) => d.spells)
+				.find((s) => s.name === "Magic Missile");
+			expect(spell?.heightening).toContain(
+				"Heightened (3) You shoot two more missiles.",
+			);
+			expect(spell?.heightening).toContain(
+				"Heightened (5) You shoot four more missiles.",
+			);
+		});
+
+		it("formats save defense", () => {
+			const creature = normalizeFoundryCreature(
+				minimalCreature({
+					items: [
+						{
+							_id: "entry1",
+							name: "Arcane Innate Spells",
+							type: "spellcastingEntry",
+							system: {
+								tradition: { value: "arcane" },
+								prepared: { value: "innate" },
+								spelldc: { dc: 25 },
+							},
+						},
+						{
+							_id: "s1",
+							name: "Fireball",
+							type: "spell",
+							system: {
+								location: { value: "entry1" },
+								level: { value: 3 },
+								traits: { value: ["fire"] },
+								area: { type: "burst", value: 20 },
+								defense: {
+									save: { statistic: "reflex", basic: true },
+								},
+							},
+						},
+					],
+				}),
+			);
+			const fireball = creature.spellcasting?.[0]?.daily
+				?.flatMap((d) => d.spells)
+				.find((s) => s.name === "Fireball");
+			expect(fireball?.defense).toBe("basic Reflex");
+			expect(fireball?.area).toBe("20-foot burst");
+		});
+
+		it("strips inline heightening text from description when structured heightening exists", () => {
+			const creature = normalizeFoundryCreature(
+				minimalCreature({
+					items: [
+						{
+							_id: "entry1",
+							name: "Arcane Prepared Spells",
+							type: "spellcastingEntry",
+							system: {
+								tradition: { value: "arcane" },
+								prepared: { value: "prepared" },
+								spelldc: { dc: 30 },
+							},
+						},
+						{
+							_id: "s1",
+							name: "Chain Lightning",
+							type: "spell",
+							system: {
+								location: { value: "entry1" },
+								level: { value: 6 },
+								traits: { value: ["electricity"] },
+								description: {
+									value:
+										"<p>You discharge a bolt of lightning. The damage is 8d12.</p><p>Heightened (+1) The damage increases by 1d12.</p>",
+								},
+								heightening: {
+									type: "interval",
+									interval: 1,
+									damage: { value: "1d12" },
+								},
+							},
+						},
+					],
+				}),
+			);
+			const spell = creature.spellcasting?.[0]?.daily
+				?.flatMap((d) => d.spells)
+				.find((s) => s.name === "Chain Lightning");
+			expect(spell?.description).toBe(
+				"You discharge a bolt of lightning. The damage is 8d12.",
+			);
+			expect(spell?.description).not.toContain("Heightened");
+			expect(spell?.heightening).toBe(
+				"Heightened (+1) damage increases by 1d12",
+			);
+		});
+
+		it("formats overlays when heightening is absent", () => {
+			const creature = normalizeFoundryCreature(
+				minimalCreature({
+					items: [
+						{
+							_id: "entry1",
+							name: "Arcane Innate Spells",
+							type: "spellcastingEntry",
+							system: {
+								tradition: { value: "arcane" },
+								prepared: { value: "innate" },
+								spelldc: { dc: 28 },
+							},
+						},
+						{
+							_id: "s1",
+							name: "Force Barrage",
+							type: "spell",
+							system: {
+								location: { value: "entry1" },
+								level: { value: 1 },
+								traits: { value: ["force", "manipulate"] },
+								description: {
+									value: "<p>You fire darts of force.</p>",
+								},
+								overlays: {
+									variant1: {
+										name: "2 actions",
+										system: {
+											description: {
+												value: "<p>You fire two darts.</p>",
+											},
+										},
+									},
+									variant2: {
+										name: "3 actions",
+										system: {
+											description: {
+												value: "<p>You fire three darts.</p>",
+											},
+										},
+									},
+								},
+							},
+						},
+					],
+				}),
+			);
+			const spell = creature.spellcasting?.[0]?.daily
+				?.flatMap((d) => d.spells)
+				.find((s) => s.name === "Force Barrage");
+			expect(spell?.heightening).toContain("2 actions: You fire two darts.");
+			expect(spell?.heightening).toContain("3 actions: You fire three darts.");
+		});
+
+		it("prefers heightening over overlays when both present", () => {
+			const creature = normalizeFoundryCreature(
+				minimalCreature({
+					items: [
+						{
+							_id: "entry1",
+							name: "Arcane Prepared Spells",
+							type: "spellcastingEntry",
+							system: {
+								tradition: { value: "arcane" },
+								prepared: { value: "prepared" },
+								spelldc: { dc: 30 },
+							},
+						},
+						{
+							_id: "s1",
+							name: "Test Spell",
+							type: "spell",
+							system: {
+								location: { value: "entry1" },
+								level: { value: 1 },
+								traits: { value: [] },
+								heightening: {
+									type: "interval",
+									interval: 2,
+									damage: { value: "1d6" },
+								},
+								overlays: {
+									variant1: {
+										name: "Variant",
+										system: {
+											description: {
+												value: "<p>Should be ignored.</p>",
+											},
+										},
+									},
+								},
+							},
+						},
+					],
+				}),
+			);
+			const spell = creature.spellcasting?.[0]?.daily
+				?.flatMap((d) => d.spells)
+				.find((s) => s.name === "Test Spell");
+			expect(spell?.heightening).toBe(
+				"Heightened (+2) damage increases by 1d6",
+			);
+			expect(spell?.heightening).not.toContain("Should be ignored");
 		});
 	});
 });
--- a/apps/web/src/adapters/bestiary-adapter.ts
+++ b/apps/web/src/adapters/bestiary-adapter.ts
@@ -4,6 +4,7 @@ import type {
 	DailySpells,
 	LegendaryBlock,
 	SpellcastingBlock,
+	SpellReference,
 	TraitBlock,
 	TraitListItem,
 	TraitSegment,
@@ -385,7 +386,7 @@ function normalizeSpellcasting(
 		const block: {
 			name: string;
 			headerText: string;
-			atWill?: string[];
+			atWill?: SpellReference[];
 			daily?: DailySpells[];
 			restLong?: DailySpells[];
 		} = {
@@ -396,7 +397,7 @@ function normalizeSpellcasting(
 		const hidden = new Set(sc.hidden ?? []);

 		if (sc.will && !hidden.has("will")) {
-			block.atWill = sc.will.map((s) => stripTags(s));
+			block.atWill = sc.will.map((s) => ({ name: stripTags(s) }));
 		}

 		if (sc.daily) {
@@ -418,7 +419,7 @@ function parseDailyMap(map: Record<string, string[]>): DailySpells[] {
 		return {
 			uses,
 			each,
-			spells: spells.map((s) => stripTags(s)),
+			spells: spells.map((s) => ({ name: stripTags(s) })),
 		};
 	});
 }
--- a/apps/web/src/adapters/bestiary-cache.ts
+++ b/apps/web/src/adapters/bestiary-cache.ts
@@ -3,7 +3,8 @@ import { type IDBPDatabase, openDB } from "idb";

 const DB_NAME = "initiative-bestiary";
 const STORE_NAME = "sources";
-const DB_VERSION = 5;
+// v6 (2026-04-09): SpellReference per-spell data added; old caches are cleared
+const DB_VERSION = 6;

 interface CachedSourceInfo {
 	readonly sourceCode: string;
--- a/apps/web/src/adapters/pf2e-bestiary-adapter.ts
+++ b/apps/web/src/adapters/pf2e-bestiary-adapter.ts
@@ -2,6 +2,7 @@ import type {
 	CreatureId,
 	Pf2eCreature,
 	SpellcastingBlock,
+	SpellReference,
 	TraitBlock,
 } from "@initiative/domain";
 import { creatureId } from "@initiative/domain";
@@ -78,13 +79,39 @@ interface SpellcastingEntrySystem {
 }

 interface SpellSystem {
+	slug?: string;
 	location?: {
 		value: string;
 		heightenedLevel?: number;
 		uses?: { max: number; value: number };
 	};
 	level?: { value: number };
-	traits?: { value: string[] };
+	traits?: { rarity?: string; value: string[]; traditions?: string[] };
+	description?: { value: string };
+	range?: { value: string };
+	target?: { value: string };
+	area?: { type?: string; value?: number; details?: string };
+	duration?: { value: string; sustained?: boolean };
+	time?: { value: string };
+	defense?: {
+		save?: { statistic: string; basic?: boolean };
+		passive?: { statistic: string };
+	};
+	heightening?:
+		| {
+				type: "fixed";
+				levels: Record<string, { text?: string }>;
+		  }
+		| {
+				type: "interval";
+				interval: number;
+				damage?: { value: string };
+		  }
+		| undefined;
+	overlays?: Record<
+		string,
+		{ name?: string; system?: { description?: { value: string } } }
+	>;
 }

 const SIZE_MAP: Record<string, string> = {
@@ -311,18 +338,102 @@ function normalizeAbility(item: RawFoundryItem): TraitBlock {

 // -- Spellcasting normalization --

-function classifySpell(spell: RawFoundryItem): {
-	isCantrip: boolean;
-	rank: number;
-	label: string;
-} {
-	const sys = spell.system as unknown as SpellSystem;
-	const isCantrip = (sys.traits?.value ?? []).includes("cantrip");
+function formatRange(range: { value: string } | undefined): string | undefined {
+	if (!range?.value) return undefined;
+	return range.value;
+}
+
+function formatArea(
+	area: { type?: string; value?: number; details?: string } | undefined,
+): string | undefined {
+	if (!area) return undefined;
+	if (area.value && area.type) return `${area.value}-foot ${area.type}`;
+	return area.details ?? undefined;
+}
+
+function formatDefense(defense: SpellSystem["defense"]): string | undefined {
+	if (!defense) return undefined;
+	if (defense.save) {
+		const stat = capitalize(defense.save.statistic);
+		return defense.save.basic ? `basic ${stat}` : stat;
+	}
+	if (defense.passive) return capitalize(defense.passive.statistic);
+	return undefined;
+}
+
+function formatHeightening(
+	heightening: SpellSystem["heightening"],
+): string | undefined {
+	if (!heightening) return undefined;
+	if (heightening.type === "fixed") {
+		const parts = Object.entries(heightening.levels)
+			.filter(([, lvl]) => lvl.text)
+			.map(
+				([rank, lvl]) =>
+					`Heightened (${rank}) ${stripFoundryTags(lvl.text as string)}`,
+			);
+		return parts.length > 0 ? parts.join("\n") : undefined;
+	}
+	if (heightening.type === "interval") {
+		const dmg = heightening.damage?.value
+			? ` damage increases by ${heightening.damage.value}`
+			: "";
+		return `Heightened (+${heightening.interval})${dmg}`;
+	}
+	return undefined;
+}
+
+function formatOverlays(overlays: SpellSystem["overlays"]): string | undefined {
+	if (!overlays) return undefined;
+	const parts: string[] = [];
+	for (const overlay of Object.values(overlays)) {
+		const desc = overlay.system?.description?.value;
+		if (!desc) continue;
+		const label = overlay.name ? `${overlay.name}: ` : "";
+		parts.push(`${label}${stripFoundryTags(desc)}`);
+	}
+	return parts.length > 0 ? parts.join("\n") : undefined;
+}
+
+/**
+ * Foundry descriptions often include heightening rules inline at the end.
+ * When we extract heightening into a structured field, strip that trailing
+ * text to avoid duplication.
+ */
+const HEIGHTENED_SUFFIX = /\s*Heightened\s*\([^)]*\)[\s\S]*$/;
+
+function normalizeSpell(item: RawFoundryItem): SpellReference {
+	const sys = item.system as unknown as SpellSystem;
+	const usesMax = sys.location?.uses?.max;
 	const rank = sys.location?.heightenedLevel ?? sys.level?.value ?? 0;
-	const uses = sys.location?.uses;
-	const label =
-		uses && uses.max > 1 ? `${spell.name} (\u00d7${uses.max})` : spell.name;
-	return { isCantrip, rank, label };
+	const heightening =
+		formatHeightening(sys.heightening) ?? formatOverlays(sys.overlays);
+
+	let description: string | undefined;
+	if (sys.description?.value) {
+		let text = stripFoundryTags(sys.description.value);
+		if (heightening) {
+			text = text.replace(HEIGHTENED_SUFFIX, "").trim();
+		}
+		description = text || undefined;
+	}
+
+	return {
+		name: item.name,
+		slug: sys.slug,
+		rank,
+		description,
+		traits: sys.traits?.value,
+		traditions: sys.traits?.traditions,
+		range: formatRange(sys.range),
+		target: sys.target?.value || undefined,
+		area: formatArea(sys.area),
+		duration: sys.duration?.value || undefined,
+		defense: formatDefense(sys.defense),
+		actionCost: sys.time?.value || undefined,
+		heightening,
+		usesPerDay: usesMax && usesMax > 1 ? usesMax : undefined,
+	};
 }

 function normalizeSpellcastingEntry(
@@ -342,26 +453,31 @@ function normalizeSpellcastingEntry(
 		(s) => (s.system as unknown as SpellSystem).location?.value === entry._id,
 	);

-	const byRank = new Map<number, string[]>();
-	const cantrips: string[] = [];
+	const byRank = new Map<number, SpellReference[]>();
+	const cantrips: SpellReference[] = [];

 	for (const spell of linkedSpells) {
-		const { isCantrip, rank, label } = classifySpell(spell);
+		const ref = normalizeSpell(spell);
+		const isCantrip =
+			(spell.system as unknown as SpellSystem).traits?.value?.includes(
+				"cantrip",
+			) ?? false;
 		if (isCantrip) {
-			cantrips.push(spell.name);
+			cantrips.push(ref);
 			continue;
 		}
+		const rank = ref.rank ?? 0;
 		const existing = byRank.get(rank) ?? [];
-		existing.push(label);
+		existing.push(ref);
 		byRank.set(rank, existing);
 	}

 	const daily = [...byRank.entries()]
 		.sort(([a], [b]) => b - a)
-		.map(([rank, spellNames]) => ({
+		.map(([rank, spells]) => ({
 			uses: rank,
 			each: true,
-			spells: spellNames,
+			spells,
 		}));

 	return {
--- a/apps/web/src/components/tests/pf2e-stat-block.test.tsx
+++ b/apps/web/src/components/tests/pf2e-stat-block.test.tsx
@@ -4,11 +4,14 @@ import "@testing-library/jest-dom/vitest";
 import type { Pf2eCreature } from "@initiative/domain";
 import { creatureId } from "@initiative/domain";
 import { cleanup, render, screen } from "@testing-library/react";
-import { afterEach, describe, expect, it } from "vitest";
+import userEvent from "@testing-library/user-event";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import { Pf2eStatBlock } from "../pf2e-stat-block.js";

 afterEach(cleanup);

+const USES_PER_DAY_REGEX = /×3/;
+const HEAL_DESCRIPTION_REGEX = /channel positive energy/;
 const PERCEPTION_SENSES_REGEX = /\+2.*Darkvision/;
 const SKILLS_REGEX = /Acrobatics \+5.*Stealth \+5/;
 const SAVE_CONDITIONAL_REGEX = /\+12.*\+1 status to all saves vs\. magic/;
@@ -22,6 +25,12 @@ const ABILITY_MID_NAME_REGEX = /Goblin Scuttle/;
 const ABILITY_MID_DESC_REGEX = /The goblin Steps\./;
 const CANTRIPS_REGEX = /Cantrips:/;
 const AC_REGEX = /16/;
+const RK_DC_13_REGEX = /DC 13/;
+const RK_DC_15_REGEX = /DC 15/;
+const RK_DC_25_REGEX = /DC 25/;
+const RK_HUMANOID_SOCIETY_REGEX = /Humanoid \(Society\)/;
+const RK_UNDEAD_RELIGION_REGEX = /Undead \(Religion\)/;
+const RK_BEAST_SKILLS_REGEX = /Beast \(Arcana\/Nature\)/;

 const GOBLIN_WARRIOR: Pf2eCreature = {
 	system: "pf2e",
@@ -90,9 +99,13 @@ const NAUNET: Pf2eCreature = {
 			name: "Divine Innate Spells",
 			headerText: "DC 25, attack +17",
 			daily: [
-				{ uses: 4, each: true, spells: ["Unfettered Movement (Constant)"] },
+				{
+					uses: 4,
+					each: true,
+					spells: [{ name: "Unfettered Movement (Constant)" }],
+				},
 			],
-			atWill: ["Detect Magic"],
+			atWill: [{ name: "Detect Magic" }],
 		},
 	],
 };
@@ -147,6 +160,53 @@ describe("Pf2eStatBlock", () => {
 		});
 	});

+	describe("recall knowledge", () => {
+		it("renders Recall Knowledge line for a creature with a recognized type trait", () => {
+			renderStatBlock(GOBLIN_WARRIOR);
+			expect(screen.getByText("Recall Knowledge")).toBeInTheDocument();
+			expect(screen.getByText(RK_DC_13_REGEX)).toBeInTheDocument();
+			expect(screen.getByText(RK_HUMANOID_SOCIETY_REGEX)).toBeInTheDocument();
+		});
+
+		it("adjusts DC for uncommon rarity", () => {
+			const uncommonCreature: Pf2eCreature = {
+				...GOBLIN_WARRIOR,
+				traits: ["uncommon", "small", "humanoid"],
+			};
+			renderStatBlock(uncommonCreature);
+			expect(screen.getByText(RK_DC_15_REGEX)).toBeInTheDocument();
+		});
+
+		it("adjusts DC for rare rarity", () => {
+			const rareCreature: Pf2eCreature = {
+				...GOBLIN_WARRIOR,
+				level: 5,
+				traits: ["rare", "medium", "undead"],
+			};
+			renderStatBlock(rareCreature);
+			expect(screen.getByText(RK_DC_25_REGEX)).toBeInTheDocument();
+			expect(screen.getByText(RK_UNDEAD_RELIGION_REGEX)).toBeInTheDocument();
+		});
+
+		it("shows multiple skills for types with dual skill mapping", () => {
+			const beastCreature: Pf2eCreature = {
+				...GOBLIN_WARRIOR,
+				traits: ["small", "beast"],
+			};
+			renderStatBlock(beastCreature);
+			expect(screen.getByText(RK_BEAST_SKILLS_REGEX)).toBeInTheDocument();
+		});
+
+		it("omits Recall Knowledge when no type trait is recognized", () => {
+			const noTypeCreature: Pf2eCreature = {
+				...GOBLIN_WARRIOR,
+				traits: ["small", "goblin"],
+			};
+			renderStatBlock(noTypeCreature);
+			expect(screen.queryByText("Recall Knowledge")).not.toBeInTheDocument();
+		});
+	});
+
 	describe("perception and senses", () => {
 		it("renders perception modifier and senses", () => {
 			renderStatBlock(GOBLIN_WARRIOR);
@@ -277,4 +337,87 @@ describe("Pf2eStatBlock", () => {
 			expect(screen.queryByText(CANTRIPS_REGEX)).not.toBeInTheDocument();
 		});
 	});
+
+	describe("clickable spells", () => {
+		const SPELLCASTER: Pf2eCreature = {
+			...NAUNET,
+			id: creatureId("test:spellcaster"),
+			name: "Spellcaster",
+			spellcasting: [
+				{
+					name: "Divine Innate Spells",
+					headerText: "DC 30, attack +20",
+					atWill: [{ name: "Detect Magic", rank: 1 }],
+					daily: [
+						{
+							uses: 4,
+							each: true,
+							spells: [
+								{
+									name: "Heal",
+									description: "You channel positive energy to heal.",
+									rank: 4,
+									usesPerDay: 3,
+								},
+								{ name: "Restoration", rank: 4 },
+							],
+						},
+					],
+				},
+			],
+		};
+
+		beforeEach(() => {
+			Object.defineProperty(globalThis, "matchMedia", {
+				writable: true,
+				configurable: true,
+				value: vi.fn().mockImplementation(() => ({
+					matches: true,
+					media: "(min-width: 1024px)",
+					onchange: null,
+					addEventListener: vi.fn(),
+					removeEventListener: vi.fn(),
+					addListener: vi.fn(),
+					removeListener: vi.fn(),
+					dispatchEvent: vi.fn(),
+				})),
+			});
+		});
+
+		it("renders a spell with a description as a clickable button", () => {
+			renderStatBlock(SPELLCASTER);
+			expect(screen.getByRole("button", { name: "Heal" })).toBeInTheDocument();
+		});
+
+		it("renders a spell without description as plain text (not a button)", () => {
+			renderStatBlock(SPELLCASTER);
+			expect(
+				screen.queryByRole("button", { name: "Restoration" }),
+			).not.toBeInTheDocument();
+			expect(screen.getByText("Restoration")).toBeInTheDocument();
+		});
+
+		it("renders usesPerDay as plain text alongside the spell button", () => {
+			renderStatBlock(SPELLCASTER);
+			expect(screen.getByText(USES_PER_DAY_REGEX)).toBeInTheDocument();
+		});
+
+		it("opens the spell popover when a spell button is clicked", async () => {
+			const user = userEvent.setup();
+			renderStatBlock(SPELLCASTER);
+			await user.click(screen.getByRole("button", { name: "Heal" }));
+			expect(screen.getByText(HEAL_DESCRIPTION_REGEX)).toBeInTheDocument();
+		});
+
+		it("closes the popover when Escape is pressed", async () => {
+			const user = userEvent.setup();
+			renderStatBlock(SPELLCASTER);
+			await user.click(screen.getByRole("button", { name: "Heal" }));
+			expect(screen.getByText(HEAL_DESCRIPTION_REGEX)).toBeInTheDocument();
+			await user.keyboard("{Escape}");
+			expect(
+				screen.queryByText(HEAL_DESCRIPTION_REGEX),
+			).not.toBeInTheDocument();
+		});
+	});
 });
--- a/apps/web/src/components/tests/source-manager.test.tsx
+++ b/apps/web/src/components/tests/source-manager.test.tsx
@@ -28,7 +28,7 @@ beforeAll(() => {

 afterEach(cleanup);

-function renderWithSources(sources: CachedSourceInfo[] = []) {
+function renderWithSources(sources: CachedSourceInfo[] = []): void {
 	const adapters = createTestAdapters();
 	// Wire getCachedSources to return the provided sources initially,
 	// then empty after clear operations
@@ -57,14 +57,14 @@ function renderWithSources(sources: CachedSourceInfo[] = []) {

 describe("SourceManager", () => {
 	it("shows 'No cached sources' empty state when no sources", async () => {
-		void renderWithSources([]);
+		renderWithSources([]);
 		await waitFor(() => {
 			expect(screen.getByText("No cached sources")).toBeInTheDocument();
 		});
 	});

 	it("lists cached sources with display name and creature count", async () => {
-		void renderWithSources([
+		renderWithSources([
 			{
 				sourceCode: "mm",
 				displayName: "Monster Manual",
@@ -88,7 +88,7 @@ describe("SourceManager", () => {

 	it("Clear All button removes all sources", async () => {
 		const user = userEvent.setup();
-		void renderWithSources([
+		renderWithSources([
 			{
 				sourceCode: "mm",
 				displayName: "Monster Manual",
@@ -110,7 +110,7 @@ describe("SourceManager", () => {

 	it("individual source delete button removes that source", async () => {
 		const user = userEvent.setup();
-		void renderWithSources([
+		renderWithSources([
 			{
 				sourceCode: "mm",
 				displayName: "Monster Manual",
--- a/apps/web/src/components/tests/spell-detail-popover.test.tsx
+++ b/apps/web/src/components/tests/spell-detail-popover.test.tsx
@@ -0,0 +1,158 @@
+// @vitest-environment jsdom
+import "@testing-library/jest-dom/vitest";
+
+import type { SpellReference } from "@initiative/domain";
+import { cleanup, fireEvent, render, screen } from "@testing-library/react";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { SpellDetailPopover } from "../spell-detail-popover.js";
+
+afterEach(cleanup);
+
+const FIREBALL: SpellReference = {
+	name: "Fireball",
+	slug: "fireball",
+	rank: 3,
+	description: "A spark leaps from your fingertip to the target.",
+	traits: ["fire", "manipulate"],
+	traditions: ["arcane", "primal"],
+	range: "500 feet",
+	area: "20-foot burst",
+	defense: "basic Reflex",
+	actionCost: "2",
+	heightening: "Heightened (+1) The damage increases by 2d6.",
+};
+
+const ANCHOR: DOMRect = new DOMRect(100, 100, 50, 20);
+
+const SPARK_LEAPS_REGEX = /spark leaps/;
+const HEIGHTENED_REGEX = /Heightened.*2d6/;
+const RANGE_REGEX = /500 feet/;
+const AREA_REGEX = /20-foot burst/;
+const DEFENSE_REGEX = /basic Reflex/;
+const NO_DESCRIPTION_REGEX = /No description available/;
+const DIALOG_LABEL_REGEX = /Spell details: Fireball/;
+
+beforeEach(() => {
+	// Force desktop variant in jsdom
+	Object.defineProperty(globalThis, "matchMedia", {
+		writable: true,
+		configurable: true,
+		value: vi.fn().mockImplementation(() => ({
+			matches: true,
+			media: "(min-width: 1024px)",
+			onchange: null,
+			addEventListener: vi.fn(),
+			removeEventListener: vi.fn(),
+			addListener: vi.fn(),
+			removeListener: vi.fn(),
+			dispatchEvent: vi.fn(),
+		})),
+	});
+});
+
+describe("SpellDetailPopover", () => {
+	it("renders spell name, rank, traits, and description", () => {
+		render(
+			<SpellDetailPopover
+				spell={FIREBALL}
+				anchorRect={ANCHOR}
+				onClose={() => {}}
+			/>,
+		);
+		expect(screen.getByText("Fireball")).toBeInTheDocument();
+		expect(screen.getByText("3rd")).toBeInTheDocument();
+		expect(screen.getByText("fire")).toBeInTheDocument();
+		expect(screen.getByText("manipulate")).toBeInTheDocument();
+		expect(screen.getByText(SPARK_LEAPS_REGEX)).toBeInTheDocument();
+	});
+
+	it("renders heightening rules when present", () => {
+		render(
+			<SpellDetailPopover
+				spell={FIREBALL}
+				anchorRect={ANCHOR}
+				onClose={() => {}}
+			/>,
+		);
+		expect(screen.getByText(HEIGHTENED_REGEX)).toBeInTheDocument();
+	});
+
+	it("renders range, area, and defense", () => {
+		render(
+			<SpellDetailPopover
+				spell={FIREBALL}
+				anchorRect={ANCHOR}
+				onClose={() => {}}
+			/>,
+		);
+		expect(screen.getByText(RANGE_REGEX)).toBeInTheDocument();
+		expect(screen.getByText(AREA_REGEX)).toBeInTheDocument();
+		expect(screen.getByText(DEFENSE_REGEX)).toBeInTheDocument();
+	});
+
+	it("calls onClose when Escape is pressed", () => {
+		const onClose = vi.fn();
+		render(
+			<SpellDetailPopover
+				spell={FIREBALL}
+				anchorRect={ANCHOR}
+				onClose={onClose}
+			/>,
+		);
+		fireEvent.keyDown(document, { key: "Escape" });
+		expect(onClose).toHaveBeenCalledTimes(1);
+	});
+
+	it("shows placeholder when description is missing", () => {
+		const spell: SpellReference = { name: "Mystery", rank: 1 };
+		render(
+			<SpellDetailPopover
+				spell={spell}
+				anchorRect={ANCHOR}
+				onClose={() => {}}
+			/>,
+		);
+		expect(screen.getByText(NO_DESCRIPTION_REGEX)).toBeInTheDocument();
+	});
+
+	it("renders the action cost as an icon when it is a numeric action count", () => {
+		render(
+			<SpellDetailPopover
+				spell={FIREBALL}
+				anchorRect={ANCHOR}
+				onClose={() => {}}
+			/>,
+		);
+		// Action cost "2" renders as an SVG ActivityIcon (portaled to body)
+		const dialog = screen.getByRole("dialog");
+		expect(dialog.querySelector("svg")).toBeInTheDocument();
+	});
+
+	it("renders non-numeric action cost as text", () => {
+		const spell: SpellReference = {
+			...FIREBALL,
+			actionCost: "1 minute",
+		};
+		render(
+			<SpellDetailPopover
+				spell={spell}
+				anchorRect={ANCHOR}
+				onClose={() => {}}
+			/>,
+		);
+		expect(screen.getByText("1 minute")).toBeInTheDocument();
+	});
+
+	it("uses the dialog role with the spell name as label", () => {
+		render(
+			<SpellDetailPopover
+				spell={FIREBALL}
+				anchorRect={ANCHOR}
+				onClose={() => {}}
+			/>,
+		);
+		expect(
+			screen.getByRole("dialog", { name: DIALOG_LABEL_REGEX }),
+		).toBeInTheDocument();
+	});
+});
--- a/apps/web/src/components/tests/stat-block.test.tsx
+++ b/apps/web/src/components/tests/stat-block.test.tsx
@@ -111,9 +111,15 @@ const DRAGON: Creature = {
 		{
 			name: "Innate Spellcasting",
 			headerText: "The dragon's spellcasting ability is Charisma.",
-			atWill: ["detect magic", "suggestion"],
-			daily: [{ uses: 3, each: true, spells: ["fireball", "wall of fire"] }],
-			restLong: [{ uses: 1, each: false, spells: ["wish"] }],
+			atWill: [{ name: "detect magic" }, { name: "suggestion" }],
+			daily: [
+				{
+					uses: 3,
+					each: true,
+					spells: [{ name: "fireball" }, { name: "wall of fire" }],
+				},
+			],
+			restLong: [{ uses: 1, each: false, spells: [{ name: "wish" }] }],
 		},
 	],
 };
--- a/apps/web/src/components/dnd-stat-block.tsx
+++ b/apps/web/src/components/dnd-stat-block.tsx
@@ -134,7 +134,7 @@ export function DndStatBlock({ creature }: Readonly<DndStatBlockProps>) {
 							{sc.atWill && sc.atWill.length > 0 && (
 								<div className="pl-2">
 									<span className="font-semibold">At Will:</span>{" "}
-									{sc.atWill.join(", ")}
+									{sc.atWill.map((s) => s.name).join(", ")}
 								</div>
 							)}
 							{sc.daily?.map((d) => (
@@ -143,7 +143,7 @@ export function DndStatBlock({ creature }: Readonly<DndStatBlockProps>) {
 										{d.uses}/day
 										{d.each ? " each" : ""}:
 									</span>{" "}
-									{d.spells.join(", ")}
+									{d.spells.map((s) => s.name).join(", ")}
 								</div>
 							))}
 							{sc.restLong?.map((d) => (
@@ -155,7 +155,7 @@ export function DndStatBlock({ creature }: Readonly<DndStatBlockProps>) {
 										{d.uses}/long rest
 										{d.each ? " each" : ""}:
 									</span>{" "}
-									{d.spells.join(", ")}
+									{d.spells.map((s) => s.name).join(", ")}
 								</div>
 							))}
 						</div>
--- a/apps/web/src/components/pf2e-stat-block.tsx
+++ b/apps/web/src/components/pf2e-stat-block.tsx
@@ -1,5 +1,7 @@
-import type { Pf2eCreature } from "@initiative/domain";
-import { formatInitiativeModifier } from "@initiative/domain";
+import type { Pf2eCreature, SpellReference } from "@initiative/domain";
+import { formatInitiativeModifier, recallKnowledge } from "@initiative/domain";
+import { useCallback, useRef, useState } from "react";
+import { SpellDetailPopover } from "./spell-detail-popover.js";
 import {
 	PropertyLine,
 	SectionDivider,
@@ -34,7 +36,85 @@ function formatMod(mod: number): string {
 	return mod >= 0 ? `+${mod}` : `${mod}`;
 }

+interface SpellLinkProps {
+	readonly spell: SpellReference;
+	readonly onOpen: (spell: SpellReference, rect: DOMRect) => void;
+}
+
+function UsesPerDay({ count }: Readonly<{ count: number | undefined }>) {
+	if (count === undefined || count <= 1) return null;
+	return <span> (×{count})</span>;
+}
+
+function SpellLink({ spell, onOpen }: Readonly<SpellLinkProps>) {
+	const ref = useRef<HTMLButtonElement>(null);
+	const handleClick = useCallback(() => {
+		if (!spell.description) return;
+		const rect = ref.current?.getBoundingClientRect();
+		if (rect) onOpen(spell, rect);
+	}, [spell, onOpen]);
+
+	if (!spell.description) {
+		return (
+			<span>
+				{spell.name}
+				<UsesPerDay count={spell.usesPerDay} />
+			</span>
+		);
+	}
+
+	return (
+		<>
+			<button
+				ref={ref}
+				type="button"
+				onClick={handleClick}
+				className="cursor-pointer text-foreground underline decoration-dotted underline-offset-2 hover:text-hover-neutral"
+			>
+				{spell.name}
+			</button>
+			<UsesPerDay count={spell.usesPerDay} />
+		</>
+	);
+}
+
+interface SpellListLineProps {
+	readonly label: string;
+	readonly spells: readonly SpellReference[];
+	readonly onOpen: (spell: SpellReference, rect: DOMRect) => void;
+}
+
+function SpellListLine({
+	label,
+	spells,
+	onOpen,
+}: Readonly<SpellListLineProps>) {
+	return (
+		<div className="pl-2">
+			<span className="font-semibold">{label}:</span>{" "}
+			{spells.map((spell, i) => (
+				<span key={spell.slug ?? spell.name}>
+					{i > 0 ? ", " : ""}
+					<SpellLink spell={spell} onOpen={onOpen} />
+				</span>
+			))}
+		</div>
+	);
+}
+
 export function Pf2eStatBlock({ creature }: Readonly<Pf2eStatBlockProps>) {
+	const [openSpell, setOpenSpell] = useState<{
+		spell: SpellReference;
+		rect: DOMRect;
+	} | null>(null);
+	const handleOpenSpell = useCallback(
+		(spell: SpellReference, rect: DOMRect) => setOpenSpell({ spell, rect }),
+		[],
+	);
+	const handleCloseSpell = useCallback(() => setOpenSpell(null), []);
+
+	const rk = recallKnowledge(creature.level, creature.traits);
+
 	const abilityEntries = [
 		{ label: "Str", mod: creature.abilityMods.str },
 		{ label: "Dex", mod: creature.abilityMods.dex },
@@ -69,6 +149,12 @@ export function Pf2eStatBlock({ creature }: Readonly<Pf2eStatBlockProps>) {
 				<p className="mt-1 text-muted-foreground text-xs">
 					{creature.sourceDisplayName}
 				</p>
+				{rk && (
+					<p className="mt-1 text-sm">
+						<span className="font-semibold">Recall Knowledge</span> DC {rk.dc}{" "}
+						&bull; {capitalize(rk.type)} ({rk.skills.join("/")})
+					</p>
+				)}
 			</div>

 			<SectionDivider />
@@ -152,23 +238,31 @@ export function Pf2eStatBlock({ creature }: Readonly<Pf2eStatBlockProps>) {
 								{sc.headerText}
 							</div>
 							{sc.daily?.map((d) => (
-								<div key={d.uses} className="pl-2">
-									<span className="font-semibold">
-										{d.uses === 0 ? "Cantrips" : `Rank ${d.uses}`}:
-									</span>{" "}
-									{d.spells.join(", ")}
-								</div>
+								<SpellListLine
+									key={d.uses}
+									label={d.uses === 0 ? "Cantrips" : `Rank ${d.uses}`}
+									spells={d.spells}
+									onOpen={handleOpenSpell}
+								/>
 							))}
 							{sc.atWill && sc.atWill.length > 0 && (
-								<div className="pl-2">
-									<span className="font-semibold">Cantrips:</span>{" "}
-									{sc.atWill.join(", ")}
-								</div>
+								<SpellListLine
+									label="Cantrips"
+									spells={sc.atWill}
+									onOpen={handleOpenSpell}
+								/>
 							)}
 						</div>
 					))}
 				</>
 			)}
+			{openSpell ? (
+				<SpellDetailPopover
+					spell={openSpell.spell}
+					anchorRect={openSpell.rect}
+					onClose={handleCloseSpell}
+				/>
+			) : null}
 		</div>
 	);
 }
--- a/apps/web/src/components/spell-detail-popover.tsx
+++ b/apps/web/src/components/spell-detail-popover.tsx
@@ -0,0 +1,296 @@
+import type { ActivityCost, SpellReference } from "@initiative/domain";
+import { useEffect, useLayoutEffect, useRef, useState } from "react";
+import { createPortal } from "react-dom";
+import { useClickOutside } from "../hooks/use-click-outside.js";
+import { useSwipeToDismissDown } from "../hooks/use-swipe-to-dismiss.js";
+import { cn } from "../lib/utils.js";
+import { ActivityIcon } from "./stat-block-parts.js";
+
+interface SpellDetailPopoverProps {
+	readonly spell: SpellReference;
+	readonly anchorRect: DOMRect;
+	readonly onClose: () => void;
+}
+
+const RANK_LABELS = [
+	"Cantrip",
+	"1st",
+	"2nd",
+	"3rd",
+	"4th",
+	"5th",
+	"6th",
+	"7th",
+	"8th",
+	"9th",
+	"10th",
+];
+
+function formatRank(rank: number | undefined): string {
+	if (rank === undefined) return "";
+	return RANK_LABELS[rank] ?? `Rank ${rank}`;
+}
+
+function parseActionCost(cost: string): ActivityCost | null {
+	if (cost === "free") return { number: 1, unit: "free" };
+	if (cost === "reaction") return { number: 1, unit: "reaction" };
+	const n = Number(cost);
+	if (n >= 1 && n <= 3) return { number: n, unit: "action" };
+	return null;
+}
+
+function SpellActionCost({ cost }: Readonly<{ cost: string | undefined }>) {
+	if (!cost) return null;
+	const activity = parseActionCost(cost);
+	if (activity) {
+		return (
+			<span className="shrink-0 text-lg">
+				<ActivityIcon activity={activity} />
+			</span>
+		);
+	}
+	return <span className="shrink-0 text-muted-foreground text-xs">{cost}</span>;
+}
+
+function SpellHeader({ spell }: Readonly<{ spell: SpellReference }>) {
+	return (
+		<div className="flex items-center justify-between gap-2">
+			<h3 className="font-bold text-lg text-stat-heading">{spell.name}</h3>
+			<SpellActionCost cost={spell.actionCost} />
+		</div>
+	);
+}
+
+function SpellTraits({ traits }: Readonly<{ traits: readonly string[] }>) {
+	if (traits.length === 0) return null;
+	return (
+		<div className="flex flex-wrap gap-1">
+			{traits.map((t) => (
+				<span
+					key={t}
+					className="rounded border border-border bg-card px-1.5 py-0.5 text-foreground text-xs"
+				>
+					{t}
+				</span>
+			))}
+		</div>
+	);
+}
+
+function LabeledValue({
+	label,
+	value,
+}: Readonly<{ label: string; value: string }>) {
+	return (
+		<>
+			<span className="font-semibold">{label}</span> {value}
+		</>
+	);
+}
+
+function SpellRangeLine({ spell }: Readonly<{ spell: SpellReference }>) {
+	const items: { label: string; value: string }[] = [];
+	if (spell.range) items.push({ label: "Range", value: spell.range });
+	if (spell.target) items.push({ label: "Target", value: spell.target });
+	if (spell.area) items.push({ label: "Area", value: spell.area });
+
+	if (items.length === 0) return null;
+	return (
+		<div>
+			{items.map((item, i) => (
+				<span key={item.label}>
+					{i > 0 ? "; " : ""}
+					<LabeledValue label={item.label} value={item.value} />
+				</span>
+			))}
+		</div>
+	);
+}
+
+function SpellMeta({ spell }: Readonly<{ spell: SpellReference }>) {
+	const hasTraditions =
+		spell.traditions !== undefined && spell.traditions.length > 0;
+	return (
+		<div className="space-y-0.5 text-xs">
+			{spell.rank === undefined ? null : (
+				<div>
+					<span className="font-semibold">{formatRank(spell.rank)}</span>
+					{hasTraditions ? (
+						<span className="text-muted-foreground">
+							{" "}
+							({spell.traditions?.join(", ")})
+						</span>
+					) : null}
+				</div>
+			)}
+			<SpellRangeLine spell={spell} />
+			{spell.duration ? (
+				<div>
+					<LabeledValue label="Duration" value={spell.duration} />
+				</div>
+			) : null}
+			{spell.defense ? (
+				<div>
+					<LabeledValue label="Defense" value={spell.defense} />
+				</div>
+			) : null}
+		</div>
+	);
+}
+
+const SAVE_OUTCOME_REGEX =
+	/(Critical Success|Critical Failure|Success|Failure)/g;
+
+function SpellDescription({ text }: Readonly<{ text: string }>) {
+	const parts = text.split(SAVE_OUTCOME_REGEX);
+	const elements: React.ReactNode[] = [];
+	let offset = 0;
+	for (const part of parts) {
+		if (SAVE_OUTCOME_REGEX.test(part)) {
+			elements.push(<strong key={`b-${offset}`}>{part}</strong>);
+		} else if (part) {
+			elements.push(<span key={`t-${offset}`}>{part}</span>);
+		}
+		offset += part.length;
+	}
+	return <p className="whitespace-pre-line text-foreground">{elements}</p>;
+}
+
+function SpellDetailContent({ spell }: Readonly<{ spell: SpellReference }>) {
+	return (
+		<div className="space-y-2 text-sm">
+			<SpellHeader spell={spell} />
+			<SpellTraits traits={spell.traits ?? []} />
+			<SpellMeta spell={spell} />
+			{spell.description ? (
+				<SpellDescription text={spell.description} />
+			) : (
+				<p className="text-muted-foreground italic">
+					No description available.
+				</p>
+			)}
+			{spell.heightening ? (
+				<p className="whitespace-pre-line text-foreground text-xs">
+					{spell.heightening}
+				</p>
+			) : null}
+		</div>
+	);
+}
+
+function DesktopPopover({
+	spell,
+	anchorRect,
+	onClose,
+}: Readonly<SpellDetailPopoverProps>) {
+	const ref = useRef<HTMLDivElement>(null);
+	const [pos, setPos] = useState<{ top: number; left: number } | null>(null);
+
+	useLayoutEffect(() => {
+		const el = ref.current;
+		if (!el) return;
+		const popover = el.getBoundingClientRect();
+		const vw = document.documentElement.clientWidth;
+		const vh = document.documentElement.clientHeight;
+		// Prefer placement to the LEFT of the anchor (panel is on the right edge)
+		let left = anchorRect.left - popover.width - 8;
+		if (left < 8) {
+			left = anchorRect.right + 8;
+		}
+		if (left + popover.width > vw - 8) {
+			left = vw - popover.width - 8;
+		}
+		let top = anchorRect.top;
+		if (top + popover.height > vh - 8) {
+			top = vh - popover.height - 8;
+		}
+		if (top < 8) top = 8;
+		setPos({ top, left });
+	}, [anchorRect]);
+
+	useClickOutside(ref, onClose);
+
+	return (
+		<div
+			ref={ref}
+			className="card-glow fixed z-50 max-h-[calc(100vh-16px)] w-80 max-w-[calc(100vw-16px)] overflow-y-auto rounded-lg border border-border bg-card p-4 shadow-lg"
+			style={pos ? { top: pos.top, left: pos.left } : { visibility: "hidden" }}
+			role="dialog"
+			aria-label={`Spell details: ${spell.name}`}
+		>
+			<SpellDetailContent spell={spell} />
+		</div>
+	);
+}
+
+function MobileSheet({
+	spell,
+	onClose,
+}: Readonly<{ spell: SpellReference; onClose: () => void }>) {
+	const { offsetY, isSwiping, handlers } = useSwipeToDismissDown(onClose);
+
+	useEffect(() => {
+		const handler = (e: KeyboardEvent) => {
+			if (e.key === "Escape") onClose();
+		};
+		document.addEventListener("keydown", handler);
+		return () => document.removeEventListener("keydown", handler);
+	}, [onClose]);
+
+	return (
+		<div className="fixed inset-0 z-50">
+			<button
+				type="button"
+				className="fade-in absolute inset-0 animate-in bg-black/50"
+				onClick={onClose}
+				aria-label="Close spell details"
+			/>
+			<div
+				className={cn(
+					"panel-glow absolute right-0 bottom-0 left-0 max-h-[80vh] rounded-t-2xl border-border border-t bg-card",
+					!isSwiping && "animate-slide-in-bottom",
+				)}
+				style={
+					isSwiping ? { transform: `translateY(${offsetY}px)` } : undefined
+				}
+				{...handlers}
+				role="dialog"
+				aria-label={`Spell details: ${spell.name}`}
+			>
+				<div className="flex justify-center pt-2 pb-1">
+					<div className="h-1 w-10 rounded-full bg-muted-foreground/40" />
+				</div>
+				<div className="max-h-[calc(80vh-24px)] overflow-y-auto p-4">
+					<SpellDetailContent spell={spell} />
+				</div>
+			</div>
+		</div>
+	);
+}
+
+export function SpellDetailPopover({
+	spell,
+	anchorRect,
+	onClose,
+}: Readonly<SpellDetailPopoverProps>) {
+	const [isDesktop, setIsDesktop] = useState(
+		() => globalThis.matchMedia("(min-width: 1024px)").matches,
+	);
+
+	useEffect(() => {
+		const mq = globalThis.matchMedia("(min-width: 1024px)");
+		const handler = (e: MediaQueryListEvent) => setIsDesktop(e.matches);
+		mq.addEventListener("change", handler);
+		return () => mq.removeEventListener("change", handler);
+	}, []);
+
+	// Portal to document.body to escape any CSS transforms on ancestors
+	// (the side panel uses translate-x for collapse animation, which would
+	// otherwise become the containing block for fixed-positioned children).
+	const content = isDesktop ? (
+		<DesktopPopover spell={spell} anchorRect={anchorRect} onClose={onClose} />
+	) : (
+		<MobileSheet spell={spell} onClose={onClose} />
+	);
+	return createPortal(content, document.body);
+}
--- a/apps/web/src/components/stat-block-parts.tsx
+++ b/apps/web/src/components/stat-block-parts.tsx
@@ -61,15 +61,19 @@ function TraitSegments({
 	);
 }

-const ACTION_DIAMOND = "M50 2 L96 50 L50 98 L4 50 Z M48 28 L78 50 L48 72 Z";
+const ACTION_DIAMOND = "M50 2 L96 50 L50 98 L4 50 Z M48 27 L71 50 L48 73 Z";
 const ACTION_DIAMOND_SOLID = "M50 2 L96 50 L50 98 L4 50 Z";
+const ACTION_DIAMOND_OUTLINE =
+	"M90 2 L136 50 L90 98 L44 50 Z M90 29 L111 50 L90 71 L69 50 Z";
 const FREE_ACTION_DIAMOND =
 	"M50 2 L96 50 L50 98 L4 50 Z M50 12 L12 50 L50 88 L88 50 Z";
-const FREE_ACTION_CHEVRON = "M48 28 L78 50 L48 72 Z";
+const FREE_ACTION_CHEVRON = "M48 27 L71 50 L48 73 Z";
 const REACTION_ARROW =
 	"M75 15 A42 42 0 1 0 85 55 L72 55 A30 30 0 1 1 65 25 L65 40 L92 20 L65 0 L65 15 Z";

-function ActivityIcon({ activity }: Readonly<{ activity: ActivityCost }>) {
+export function ActivityIcon({
+	activity,
+}: Readonly<{ activity: ActivityCost }>) {
 	const cls = "inline-block h-[1em] align-[-0.1em]";
 	if (activity.unit === "free") {
 		return (
@@ -101,7 +105,7 @@ function ActivityIcon({ activity }: Readonly<{ activity: ActivityCost }>) {
 			<svg aria-hidden="true" className={cls} viewBox="0 0 140 100">
 				<path d={ACTION_DIAMOND_SOLID} fill="currentColor" />
 				<path
-					d="M90 2 L136 50 L90 98 L44 50 Z M88 28 L118 50 L88 72 Z"
+					d={ACTION_DIAMOND_OUTLINE}
 					fill="currentColor"
 					fillRule="evenodd"
 				/>
@@ -113,7 +117,7 @@ function ActivityIcon({ activity }: Readonly<{ activity: ActivityCost }>) {
 			<path d={ACTION_DIAMOND_SOLID} fill="currentColor" />
 			<path d="M90 2 L136 50 L90 98 L44 50 Z" fill="currentColor" />
 			<path
-				d="M130 2 L176 50 L130 98 L84 50 Z M128 28 L158 50 L128 72 Z"
+				d="M130 2 L176 50 L130 98 L84 50 Z M130 29 L151 50 L130 71 L109 50 Z"
 				fill="currentColor"
 				fillRule="evenodd"
 			/>
--- a/apps/web/src/hooks/use-encounter.ts
+++ b/apps/web/src/hooks/use-encounter.ts
@@ -421,7 +421,10 @@ function dispatchEncounterAction(
 export function useEncounter() {
 	const { encounterPersistence, undoRedoPersistence } = useAdapters();
 	const [state, dispatch] = useReducer(encounterReducer, null, () =>
-		initializeState(encounterPersistence.load, undoRedoPersistence.load),
+		initializeState(
+			() => encounterPersistence.load(),
+			() => undoRedoPersistence.load(),
+		),
 	);
 	const { encounter, undoRedoState, events } = state;

--- a/apps/web/src/hooks/use-swipe-to-dismiss.ts
+++ b/apps/web/src/hooks/use-swipe-to-dismiss.ts
@@ -70,3 +70,72 @@ export function useSwipeToDismiss(onDismiss: () => void) {
 		handlers: { onTouchStart, onTouchMove, onTouchEnd },
 	};
 }
+
+/**
+ * Vertical (down-only) variant for dismissing bottom sheets via swipe-down.
+ * Mirrors `useSwipeToDismiss` but locks to vertical direction and tracks
+ * the sheet height instead of width.
+ */
+export function useSwipeToDismissDown(onDismiss: () => void) {
+	const [swipe, setSwipe] = useState<SwipeState>({
+		offsetX: 0,
+		isSwiping: false,
+	});
+	const startX = useRef(0);
+	const startY = useRef(0);
+	const startTime = useRef(0);
+	const sheetHeight = useRef(0);
+	const directionLocked = useRef<"horizontal" | "vertical" | null>(null);
+
+	const onTouchStart = useCallback((e: React.TouchEvent) => {
+		const touch = e.touches[0];
+		startX.current = touch.clientX;
+		startY.current = touch.clientY;
+		startTime.current = Date.now();
+		directionLocked.current = null;
+		const el = e.currentTarget as HTMLElement;
+		sheetHeight.current = el.getBoundingClientRect().height;
+	}, []);
+
+	const onTouchMove = useCallback((e: React.TouchEvent) => {
+		const touch = e.touches[0];
+		const dx = touch.clientX - startX.current;
+		const dy = touch.clientY - startY.current;
+
+		if (!directionLocked.current) {
+			if (Math.abs(dx) < 10 && Math.abs(dy) < 10) return;
+			directionLocked.current =
+				Math.abs(dy) > Math.abs(dx) ? "vertical" : "horizontal";
+		}
+
+		if (directionLocked.current === "horizontal") return;
+
+		const clampedY = Math.max(0, dy);
+		// `offsetX` is reused as the vertical offset to keep SwipeState shared.
+		setSwipe({ offsetX: clampedY, isSwiping: true });
+	}, []);
+
+	const onTouchEnd = useCallback(() => {
+		if (directionLocked.current !== "vertical") {
+			setSwipe({ offsetX: 0, isSwiping: false });
+			return;
+		}
+
+		const elapsed = (Date.now() - startTime.current) / 1000;
+		const velocity = swipe.offsetX / elapsed / sheetHeight.current;
+		const ratio =
+			sheetHeight.current > 0 ? swipe.offsetX / sheetHeight.current : 0;
+
+		if (ratio > DISMISS_THRESHOLD || velocity > VELOCITY_THRESHOLD) {
+			onDismiss();
+		}
+
+		setSwipe({ offsetX: 0, isSwiping: false });
+	}, [swipe.offsetX, onDismiss]);
+
+	return {
+		offsetY: swipe.offsetX,
+		isSwiping: swipe.isSwiping,
+		handlers: { onTouchStart, onTouchMove, onTouchEnd },
+	};
+}
--- a/apps/web/src/index.css
+++ b/apps/web/src/index.css
@@ -103,6 +103,19 @@
 	animation: slide-in-right 200ms ease-out;
 }

+@keyframes slide-in-bottom {
+	from {
+		transform: translateY(100%);
+	}
+	to {
+		transform: translateY(0);
+	}
+}
+
+@utility animate-slide-in-bottom {
+	animation: slide-in-bottom 200ms ease-out;
+}
+
@keyframes confirm-pulse {
 	0% {
 		scale: 1;
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
 		"knip": "knip",
 		"jscpd": "jscpd",
 		"jsinspect": "jsinspect -c .jsinspectrc apps/web/src packages/domain/src packages/application/src",
-		"oxlint": "oxlint --tsconfig apps/web/tsconfig.json --type-aware --deny warnings",
+		"oxlint": "oxlint --tsconfig apps/web/tsconfig.json --type-aware --deny-warnings",
 		"check:ignores": "node scripts/check-lint-ignores.mjs",
 		"check:classnames": "node scripts/check-cn-classnames.mjs",
 		"check:props": "node scripts/check-component-props.mjs",
--- a/packages/domain/src/tests/conditions.test.ts
+++ b/packages/domain/src/tests/conditions.test.ts
@@ -47,8 +47,8 @@ describe("getConditionDescription", () => {
 				(d.systems.includes("5e") && d.systems.includes("5.5e")),
 		);
 		for (const def of sharedDndConditions) {
-			expect(def.description, `${def.id} missing description`).toBeTruthy();
-			expect(def.description5e, `${def.id} missing description5e`).toBeTruthy();
+			expect(def.description).toBeTruthy();
+			expect(def.description5e).toBeTruthy();
 		}
 	});

--- a/packages/domain/src/tests/recall-knowledge.test.ts
+++ b/packages/domain/src/tests/recall-knowledge.test.ts
@@ -0,0 +1,99 @@
+import { describe, expect, it } from "vitest";
+import { recallKnowledge } from "../recall-knowledge.js";
+
+describe("recallKnowledge", () => {
+	it("returns null when no type trait is recognized", () => {
+		expect(recallKnowledge(5, ["small", "goblin"])).toBeNull();
+	});
+
+	it("calculates DC for a common creature from the DC-by-level table", () => {
+		const result = recallKnowledge(5, ["humanoid"]);
+		expect(result).toEqual({ dc: 20, type: "humanoid", skills: ["Society"] });
+	});
+
+	it("calculates DC for level -1", () => {
+		const result = recallKnowledge(-1, ["humanoid"]);
+		expect(result).toEqual({ dc: 13, type: "humanoid", skills: ["Society"] });
+	});
+
+	it("calculates DC for level 0", () => {
+		const result = recallKnowledge(0, ["animal"]);
+		expect(result).toEqual({ dc: 14, type: "animal", skills: ["Nature"] });
+	});
+
+	it("calculates DC for level 25 (max table entry)", () => {
+		const result = recallKnowledge(25, ["dragon"]);
+		expect(result).toEqual({ dc: 50, type: "dragon", skills: ["Arcana"] });
+	});
+
+	it("clamps DC for levels beyond the table", () => {
+		const result = recallKnowledge(30, ["dragon"]);
+		expect(result).toEqual({ dc: 50, type: "dragon", skills: ["Arcana"] });
+	});
+
+	it("adjusts DC for uncommon rarity (+2)", () => {
+		const result = recallKnowledge(5, ["uncommon", "medium", "undead"]);
+		expect(result).toEqual({
+			dc: 22,
+			type: "undead",
+			skills: ["Religion"],
+		});
+	});
+
+	it("adjusts DC for rare rarity (+5)", () => {
+		const result = recallKnowledge(5, ["rare", "large", "dragon"]);
+		expect(result).toEqual({ dc: 25, type: "dragon", skills: ["Arcana"] });
+	});
+
+	it("adjusts DC for unique rarity (+10)", () => {
+		const result = recallKnowledge(5, ["unique", "medium", "humanoid"]);
+		expect(result).toEqual({
+			dc: 30,
+			type: "humanoid",
+			skills: ["Society"],
+		});
+	});
+
+	it("returns multiple skills for beast type", () => {
+		const result = recallKnowledge(3, ["beast"]);
+		expect(result).toEqual({
+			dc: 18,
+			type: "beast",
+			skills: ["Arcana", "Nature"],
+		});
+	});
+
+	it("returns multiple skills for construct type", () => {
+		const result = recallKnowledge(1, ["construct"]);
+		expect(result).toEqual({
+			dc: 15,
+			type: "construct",
+			skills: ["Arcana", "Crafting"],
+		});
+	});
+
+	it("matches type traits case-insensitively", () => {
+		const result = recallKnowledge(5, ["Humanoid"]);
+		expect(result).toEqual({ dc: 20, type: "Humanoid", skills: ["Society"] });
+	});
+
+	it("uses the first matching type trait when multiple are present", () => {
+		const result = recallKnowledge(7, ["large", "monitor", "protean"]);
+		expect(result).toEqual({
+			dc: 23,
+			type: "monitor",
+			skills: ["Religion"],
+		});
+	});
+
+	it("preserves original trait casing in the returned type", () => {
+		const result = recallKnowledge(1, ["Fey"]);
+		expect(result?.type).toBe("Fey");
+	});
+
+	it("ignores common rarity (no adjustment)", () => {
+		// "common" is not included in traits by the normalization pipeline
+		const result = recallKnowledge(5, ["medium", "humanoid"]);
+		expect(result?.dc).toBe(20);
+	});
+});
--- a/packages/domain/src/auto-number.ts
+++ b/packages/domain/src/auto-number.ts
@@ -1,3 +1,28 @@
+const DIGITS_ONLY = /^\d+$/;
+
+function scanExisting(
+	baseName: string,
+	existingNames: readonly string[],
+): { exactMatches: number[]; maxNumber: number } {
+	const exactMatches: number[] = [];
+	let maxNumber = 0;
+	const prefix = `${baseName} `;
+
+	for (let i = 0; i < existingNames.length; i++) {
+		const name = existingNames[i];
+		if (name === baseName) {
+			exactMatches.push(i);
+		} else if (name.startsWith(prefix)) {
+			const suffix = name.slice(prefix.length);
+			if (DIGITS_ONLY.test(suffix)) {
+				const num = Number.parseInt(suffix, 10);
+				if (num > maxNumber) maxNumber = num;
+			}
+		}
+	}
+	return { exactMatches, maxNumber };
+}
+
 /**
 * Resolves a creature name against existing combatant names,
 * handling auto-numbering for duplicates.
@@ -14,25 +39,7 @@ export function resolveCreatureName(
 	newName: string;
 	renames: ReadonlyArray<{ from: string; to: string }>;
 } {
-	// Find exact matches and numbered matches (e.g., "Goblin 1", "Goblin 2")
-	const exactMatches: number[] = [];
-	let maxNumber = 0;
-
-	for (let i = 0; i < existingNames.length; i++) {
-		const name = existingNames[i];
-		if (name === baseName) {
-			exactMatches.push(i);
-		} else {
-			const match = new RegExp(
-				String.raw`^${escapeRegExp(baseName)} (\d+)$`,
-			).exec(name);
-			// biome-ignore lint/nursery/noUnnecessaryConditions: RegExp.exec() returns null on no match — false positive
-			if (match) {
-				const num = Number.parseInt(match[1], 10);
-				if (num > maxNumber) maxNumber = num;
-			}
-		}
-	}
+	const { exactMatches, maxNumber } = scanExisting(baseName, existingNames);

 	// No conflict at all
 	if (exactMatches.length === 0 && maxNumber === 0) {
@@ -51,7 +58,3 @@ export function resolveCreatureName(
 	const nextNumber = Math.max(maxNumber, exactMatches.length) + 1;
 	return { newName: `${baseName} ${nextNumber}`, renames: [] };
 }
-
-function escapeRegExp(s: string): string {
-	return s.replaceAll(/[.*+?^${}()|[\]\\]/g, String.raw`\$&`);
-}
--- a/packages/domain/src/creature-types.ts
+++ b/packages/domain/src/creature-types.ts
@@ -31,16 +31,71 @@ export interface LegendaryBlock {
 	readonly entries: readonly TraitBlock[];
 }

+/**
+ * A single spell entry within a creature's spellcasting block.
+ *
+ * `name` is always populated. All other fields are optional and are only
+ * populated for PF2e creatures (sourced from embedded Foundry VTT spell items).
+ * D&D 5e creatures populate only `name`.
+ */
+export interface SpellReference {
+	readonly name: string;
+
+	/** Stable slug from Foundry VTT (e.g. "magic-missile"). PF2e only. */
+	readonly slug?: string;
+
+	/** Plain-text description with Foundry enrichment tags stripped. */
+	readonly description?: string;
+
+	/** Spell rank/level (0 = cantrip). */
+	readonly rank?: number;
+
+	/** Trait slugs (e.g. ["concentrate", "manipulate", "force"]). */
+	readonly traits?: readonly string[];
+
+	/** Tradition labels (e.g. ["arcane", "occult"]). */
+	readonly traditions?: readonly string[];
+
+	/** Range (e.g. "30 feet", "touch"). */
+	readonly range?: string;
+
+	/** Target (e.g. "1 creature"). */
+	readonly target?: string;
+
+	/** Area (e.g. "20-foot burst"). */
+	readonly area?: string;
+
+	/** Duration (e.g. "1 minute", "sustained up to 1 minute"). */
+	readonly duration?: string;
+
+	/** Defense / save (e.g. "basic Reflex", "Will"). */
+	readonly defense?: string;
+
+	/** Action cost. PF2e: number = action count, "reaction", "free", or
+	 *  "1 minute" / "10 minutes" for cast time. */
+	readonly actionCost?: string;
+
+	/**
+	 * Heightening rules text. May come from `system.heightening` (fixed
+	 * intervals) or `system.overlays` (variant casts). Plain text after
+	 * tag stripping.
+	 */
+	readonly heightening?: string;
+
+	/** Uses per day for "(×N)" rendering, when > 1. PF2e only. */
+	readonly usesPerDay?: number;
+}
+
 export interface DailySpells {
 	readonly uses: number;
 	readonly each: boolean;
-	readonly spells: readonly string[];
+	readonly spells: readonly SpellReference[];
 }

 export interface SpellcastingBlock {
 	readonly name: string;
 	readonly headerText: string;
-	readonly atWill?: readonly string[];
+	readonly atWill?: readonly SpellReference[];
 	readonly daily?: readonly DailySpells[];
 	readonly restLong?: readonly DailySpells[];
 }
--- a/packages/domain/src/index.ts
+++ b/packages/domain/src/index.ts
@@ -39,6 +39,7 @@ export {
 	type Pf2eCreature,
 	proficiencyBonus,
 	type SpellcastingBlock,
+	type SpellReference,
 	type TraitBlock,
 	type TraitListItem,
 	type TraitSegment,
@@ -107,6 +108,10 @@ export {
 	VALID_PLAYER_COLORS,
 	VALID_PLAYER_ICONS,
 } from "./player-character-types.js";
+export {
+	type RecallKnowledge,
+	recallKnowledge,
+} from "./recall-knowledge.js";
 export { rehydrateCombatant } from "./rehydrate-combatant.js";
 export { rehydratePlayerCharacter } from "./rehydrate-player-character.js";
 export {
--- a/packages/domain/src/recall-knowledge.ts
+++ b/packages/domain/src/recall-knowledge.ts
@@ -0,0 +1,118 @@
+/**
+ * PF2e Recall Knowledge DC calculation and type-to-skill mapping.
+ *
+ * DC is derived from creature level using the standard DC-by-level table
+ * (Player Core / GM Core), adjusted for rarity.
+ */
+
+/** Standard DC-by-level table from PF2e GM Core. Index = level + 1 (level -1 → index 0). */
+const DC_BY_LEVEL: readonly number[] = [
+	13, // level -1
+	14, // level 0
+	15, // level 1
+	16, // level 2
+	18, // level 3
+	19, // level 4
+	20, // level 5
+	22, // level 6
+	23, // level 7
+	24, // level 8
+	26, // level 9
+	27, // level 10
+	28, // level 11
+	30, // level 12
+	31, // level 13
+	32, // level 14
+	34, // level 15
+	35, // level 16
+	36, // level 17
+	38, // level 18
+	39, // level 19
+	40, // level 20
+	42, // level 21
+	44, // level 22
+	46, // level 23
+	48, // level 24
+	50, // level 25
+];
+
+const RARITY_ADJUSTMENT: Readonly<Record<string, number>> = {
+	uncommon: 2,
+	rare: 5,
+	unique: 10,
+};
+
+/**
+ * Mapping from PF2e creature type traits to the skill(s) used for
+ * Recall Knowledge. Types that map to multiple skills list all of them.
+ */
+const TYPE_TO_SKILLS: Readonly<Record<string, readonly string[]>> = {
+	aberration: ["Occultism"],
+	animal: ["Nature"],
+	astral: ["Occultism"],
+	beast: ["Arcana", "Nature"],
+	celestial: ["Religion"],
+	construct: ["Arcana", "Crafting"],
+	dragon: ["Arcana"],
+	dream: ["Occultism"],
+	elemental: ["Arcana", "Nature"],
+	ethereal: ["Occultism"],
+	fey: ["Nature"],
+	fiend: ["Religion"],
+	fungus: ["Nature"],
+	giant: ["Society"],
+	humanoid: ["Society"],
+	monitor: ["Religion"],
+	ooze: ["Occultism"],
+	plant: ["Nature"],
+	undead: ["Religion"],
+};
+
+export interface RecallKnowledge {
+	readonly dc: number;
+	readonly type: string;
+	readonly skills: readonly string[];
+}
+
+/**
+ * Calculate Recall Knowledge DC, type, and skill(s) for a PF2e creature.
+ *
+ * Returns `null` when no recognized type trait is found in the creature's
+ * traits array, indicating the Recall Knowledge line should be omitted.
+ */
+export function recallKnowledge(
+	level: number,
+	traits: readonly string[],
+): RecallKnowledge | null {
+	// Find the first type trait that maps to a skill
+	let matchedType: string | undefined;
+	let skills: readonly string[] | undefined;
+
+	for (const trait of traits) {
+		const lower = trait.toLowerCase();
+		const mapped = TYPE_TO_SKILLS[lower];
+		if (mapped) {
+			matchedType = trait;
+			skills = mapped;
+			break;
+		}
+	}
+
+	if (!matchedType || !skills) return null;
+
+	// Calculate DC from level
+	const clampedIndex = Math.max(0, Math.min(level + 1, DC_BY_LEVEL.length - 1));
+	let dc = DC_BY_LEVEL[clampedIndex];
+
+	// Apply rarity adjustment (rarity traits are included in the traits array
+	// for non-common creatures by the normalization pipeline)
+	for (const trait of traits) {
+		const adjustment = RARITY_ADJUSTMENT[trait.toLowerCase()];
+		if (adjustment) {
+			dc += adjustment;
+			break;
+		}
+	}
+
+	return { dc, type: matchedType, skills };
+}
--- a/scripts/check-lint-ignores.mjs
+++ b/scripts/check-lint-ignores.mjs
@@ -1,29 +1,14 @@
 /**
- * Backpressure check for biome-ignore comments.
+ * Zero-tolerance check for biome-ignore comments.
 *
- * 1. Ratcheting cap — source and test files have separate max counts.
- *    Lower these numbers as you fix ignores; they can never go up silently.
- * 2. Banned rules — ignoring certain rule categories is never allowed.
- * 3. Justification — every ignore must have a non-empty explanation after
- *    the rule name.
+ * Any `biome-ignore` in tracked .ts/.tsx files fails the build.
+ * Fix the underlying issue instead of suppressing the rule.
 */

 import { execSync } from "node:child_process";
 import { readFileSync } from "node:fs";

-// ── Configuration ──────────────────────────────────────────────────────
-const MAX_SOURCE_IGNORES = 2;
-const MAX_TEST_IGNORES = 3;
-
-/** Rule prefixes that must never be suppressed. */
-const BANNED_PREFIXES = [
-	"lint/security/",
-	"lint/correctness/noGlobalObjectCalls",
-	"lint/correctness/noUnsafeFinally",
-];
-// ───────────────────────────────────────────────────────────────────────
-
-const IGNORE_PATTERN = /biome-ignore\s+([\w/]+)(?::\s*(.*))?/;
+const IGNORE_PATTERN = /biome-ignore\s+([\w/]+)/;

 function findFiles() {
 	return execSync("git ls-files -- '*.ts' '*.tsx'", { encoding: "utf-8" })
@@ -32,17 +17,7 @@ function findFiles() {
 		.filter(Boolean);
 }

-function isTestFile(path) {
-	return (
-		path.includes("__tests__/") ||
-		path.endsWith(".test.ts") ||
-		path.endsWith(".test.tsx")
-	);
-}
-
-let errors = 0;
-let sourceCount = 0;
-let testCount = 0;
+let count = 0;

 for (const file of findFiles()) {
 	const lines = readFileSync(file, "utf-8").split("\n");
@@ -51,58 +26,16 @@ for (const file of findFiles()) {
 		const match = lines[i].match(IGNORE_PATTERN);
 		if (!match) continue;

-		const rule = match[1];
-		const justification = (match[2] ?? "").trim();
-		const loc = `${file}:${i + 1}`;
-
-		// Count by category
-		if (isTestFile(file)) {
-			testCount++;
-		} else {
-			sourceCount++;
-		}
-
-		// Banned rules
-		for (const prefix of BANNED_PREFIXES) {
-			if (rule.startsWith(prefix)) {
-				console.error(`BANNED: ${loc} — ${rule} must not be suppressed`);
-				errors++;
-			}
-		}
-
-		// Justification required
-		if (!justification) {
-			console.error(
-				`MISSING JUSTIFICATION: ${loc} — biome-ignore ${rule} needs an explanation after the colon`,
-			);
-			errors++;
-		}
+		count++;
+		console.error(`FORBIDDEN: ${file}:${i + 1} — biome-ignore ${match[1]}`);
 	}
 }

-// Ratcheting caps
-if (sourceCount > MAX_SOURCE_IGNORES) {
+if (count > 0) {
 	console.error(
-		`SOURCE CAP EXCEEDED: ${sourceCount} biome-ignore comments in source (max ${MAX_SOURCE_IGNORES}). Fix issues and lower the cap.`,
+		`\n${count} biome-ignore comment(s) found. Fix the issue or restructure the code.`,
 	);
-	errors++;
-}
-
-if (testCount > MAX_TEST_IGNORES) {
-	console.error(
-		`TEST CAP EXCEEDED: ${testCount} biome-ignore comments in tests (max ${MAX_TEST_IGNORES}). Fix issues and lower the cap.`,
-	);
-	errors++;
-}
-
-// Summary
-console.log(
-	`biome-ignore: ${sourceCount} source (max ${MAX_SOURCE_IGNORES}), ${testCount} test (max ${MAX_TEST_IGNORES})`,
-);
-
-if (errors > 0) {
-	console.error(`\n${errors} problem(s) found.`);
 	process.exit(1);
 } else {
-	console.log("All checks passed.");
+	console.log("biome-ignore: 0 — all clear.");
 }
--- a/specs/004-bestiary/spec.md
+++ b/specs/004-bestiary/spec.md
@@ -98,6 +98,16 @@ A view button in the search bar (repurposed from the current search icon) opens
 **US-D3 — Responsive Layout (P4)**
 As a DM using the app on different devices, I want the layout to adapt between side-by-side (desktop) and drawer (mobile) so that the stat block is usable regardless of screen size.

+**US-D4 — View Spell Descriptions Inline (P2)**
+As a DM running a PF2e encounter, I want to click a spell name in a creature's stat block to see the spell's full description without leaving the stat block, so I can quickly resolve what a spell does mid-combat without consulting external tools.
+
+A click on any spell name in the spellcasting section opens a popover (desktop) or bottom sheet (mobile) showing the spell's description, level, traits, range, action cost, target/area, duration, defense/save, and heightening rules. The data is read directly from the cached creature data (already embedded in NPC JSON from Foundry VTT) — no additional network fetch is required, and the feature works offline once the source has been loaded. Dismiss with click-outside, Escape, or (on mobile) swipe-down.
+
+**US-D5 — View Recall Knowledge DC and Skill (P2)**
+As a DM running a PF2e encounter, I want to see the Recall Knowledge DC and associated skill on a creature's stat block so I can quickly tell players the DC and which skill to roll without looking it up in external tools.
+
+The Recall Knowledge line appears below the trait tags, showing the DC (calculated from the creature's level using the PF2e standard DC-by-level table, adjusted for rarity) and the skill determined by the creature's type trait. The line is omitted for creatures with no recognized type trait and never shown for D&D creatures.
+
 ### Requirements

 - **FR-016**: The system MUST display a stat block panel with full creature information when a creature is selected.
@@ -116,6 +126,13 @@ As a DM using the app on different devices, I want the layout to adapt between s
 - **FR-067**: PF2e stat blocks MUST organize abilities into three sections: top (above defenses), mid (reactions and auras), and bot (active abilities), matching the Foundry VTT PF2e item categorization.
 - **FR-068**: PF2e stat blocks MUST strip HTML tags from Foundry VTT ability descriptions and render them as plain readable text. The HTML-to-text conversion serves the same role as the D&D tag-stripping approach (FR-019).
 - **FR-062**: Bestiary-linked combatant rows MUST display a small book icon (Lucide `BookOpen`) as the dedicated stat block trigger. The icon MUST have a tooltip ("View stat block") and an `aria-label="View stat block"` for accessibility. The book icon is the only way to manually open a stat block from the tracker — clicking the combatant name always enters inline rename mode. Non-bestiary combatant rows MUST NOT display the book icon.
+- **FR-077**: PF2e stat blocks MUST render each spell name in the spellcasting section as an interactive element (clickable button), not as plain joined text.
+- **FR-078**: Clicking a spell name MUST open a popover (desktop) or bottom sheet (mobile) displaying the spell's description, level, traits, range, time/actions, target/area, duration, defense/save, and heightening rules.
+- **FR-079**: The spell description popover/sheet MUST render content from the spell data already embedded in the cached creature JSON — no additional network fetch is required.
+- **FR-080**: The spell description popover/sheet MUST be dismissible by clicking outside, pressing Escape, or (on mobile) swiping the sheet down.
+- **FR-081**: Spell descriptions MUST be processed through the existing Foundry tag-stripping utility before display (consistent with FR-068).
+- **FR-082**: When a spell name has a parenthetical modifier (e.g., "Heal (×3)", "Unfettered Movement (Constant)"), only the spell name portion MUST be the click target; the modifier MUST remain as adjacent plain text.
+- **FR-083**: The spell description display MUST handle both representations of heightening present in Foundry VTT data: `system.heightening` and `system.overlays`.

 ### Acceptance Scenarios

@@ -131,12 +148,25 @@ As a DM using the app on different devices, I want the layout to adapt between s
 10. **Given** a bestiary-linked combatant row is visible, **When** the user clicks the combatant's name, **Then** inline rename mode is entered — the stat block does NOT open.
 11. **Given** a PF2e creature is selected, **When** the stat block opens, **Then** it displays: name, level, traits as tags, Perception, senses, languages, skills, ability modifiers, AC, Fort/Ref/Will saves, HP, speed, attacks, abilities (top/mid/bot sections), and spellcasting (if applicable). No CR, no ability scores, no legendary actions.
 12. **Given** a PF2e creature with conditional AC (e.g., "with shield raised"), **When** viewing the stat block, **Then** both the standard AC and conditional AC are shown.
+13. **Given** a PF2e creature with spellcasting is displayed in the stat block panel, **When** the DM clicks a spell name in the spellcasting section, **Then** a popover (desktop) or bottom sheet (mobile) opens showing the spell's description, level, traits, range, action cost, and any heightening rules.
+14. **Given** the spell description popover is open, **When** the DM clicks outside it or presses Escape, **Then** the popover dismisses.
+15. **Given** the spell description bottom sheet is open on mobile, **When** the DM swipes the sheet down, **Then** the sheet dismisses.
+16. **Given** a creature from a legacy (non-remastered) PF2e source has spells with pre-remaster names (e.g., "Magic Missile", "True Strike"), **When** the DM clicks one of those spell names, **Then** the spell description still displays correctly using the embedded data.
+17. **Given** a spell name appears as "Heal (×3)" in the stat block, **When** the DM looks at the rendered output, **Then** "Heal" is the clickable element and "(×3)" appears as plain text next to it.
+18. **Given** a PF2e creature with level 5 and common rarity is displayed, **When** the DM views the stat block, **Then** a "Recall Knowledge" line appears below the trait tags showing the DC calculated from level 5 (DC 20) and the skill derived from the creature's type trait.
+19. **Given** a PF2e creature with rare rarity is displayed, **When** the DM views the stat block, **Then** the Recall Knowledge DC is the standard DC for its level +5.
+20. **Given** a PF2e creature with the "Undead" type trait is displayed, **When** the DM views the stat block, **Then** the Recall Knowledge line shows "Religion" as the associated skill.
+21. **Given** a D&D creature is displayed, **When** the DM views the stat block, **Then** no Recall Knowledge line is shown.

 ### Edge Cases

 - Creatures with no traits or legendary actions: those sections are omitted from the stat block display.
 - Very long content (e.g., a Lich with extensive spellcasting): the stat block panel scrolls independently of the encounter tracker.
 - Viewport resized from wide to narrow while stat block is open: the layout transitions from panel to drawer.
+- Embedded spell item missing description text: the popover/sheet shows the available metadata (level, traits, range, etc.) and a placeholder note for the missing description.
+- Cached source data from before the spell description feature was added: existing cached entries lack the new per-spell data fields. The IndexedDB schema version MUST be bumped to invalidate old caches and trigger re-fetch (re-normalization from raw Foundry data is not possible because the original raw JSON is not retained).
+- Creature with no recognized type trait (e.g., a creature whose only traits are not in the type-to-skill mapping): the Recall Knowledge line is omitted entirely.
+- Creature with a type trait that maps to multiple skills (e.g., Beast → Arcana/Nature): both skills are shown.

 ---

@@ -197,6 +227,12 @@ A DM wants to see which sources are cached, find a specific source, clear a spec
 - **FR-074**: The PF2e index MUST exclude legacy/pre-remaster creatures based on the `publication.remaster` field — only remaster-era content is included by default.
 - **FR-075**: PF2e creature abilities MUST have complete descriptive text in stat blocks. Stubs, generic feat references, and unresolved copy entries are not acceptable.
 - **FR-076**: The PF2e index SHOULD carry per-creature license tagging (ORC/OGL) derived from the Foundry VTT source data.
+- **FR-084**: The PF2e normalization pipeline MUST preserve per-spell data (slug, level, traits, range, time, target, area, duration, defense, description, heightening/overlays) from embedded `items[type=spell]` entries on NPCs, in addition to the spell name. This data MUST be stored in the cached source data and persisted across browser sessions.
+- **FR-085**: PF2e stat blocks MUST display a "Recall Knowledge" line below the trait tags showing the DC and the associated skill (e.g., "Recall Knowledge DC 18 • Undead (Religion)").
+- **FR-086**: The Recall Knowledge DC MUST be calculated from the creature's level using the PF2e standard DC-by-level table, adjusted for rarity: uncommon +2, rare +5, unique +10.
+- **FR-087**: The Recall Knowledge skill MUST be derived from the creature's type trait using the standard PF2e mapping (e.g., Aberration → Occultism, Animal → Nature, Astral → Occultism, Beast → Arcana/Nature, Celestial → Religion, Construct → Arcana/Crafting, Dragon → Arcana, Dream → Occultism, Elemental → Arcana/Nature, Ethereal → Occultism, Fey → Nature, Fiend → Religion, Fungus → Nature, Giant → Society, Humanoid → Society, Monitor → Religion, Ooze → Occultism, Plant → Nature, Undead → Religion).
+- **FR-088**: Creatures with no recognized type trait MUST omit the Recall Knowledge line entirely rather than showing incorrect data.
+- **FR-089**: The Recall Knowledge line MUST NOT be shown for D&D creatures.

 ### Acceptance Scenarios

@@ -298,7 +334,7 @@ As a DM with a creature pinned, I want to collapse the right (browse) panel inde
 - **Search Index (D&D)** (`BestiaryIndex`): Pre-shipped lightweight dataset keyed by name + source, containing mechanical facts (name, source code, AC, HP average, DEX score, CR, initiative proficiency multiplier, size, type) for all creatures. Sufficient for adding combatants; insufficient for rendering a full stat block.
 - **Search Index (PF2e)** (`Pf2eBestiaryIndex`): Pre-shipped lightweight dataset for PF2e creatures, containing name, source code, AC, HP, level, Perception modifier, size, and creature type. Parallel to the D&D search index but with PF2e-specific fields (level instead of CR, Perception instead of DEX/proficiency).
 - **Source** (`BestiarySource`): A D&D or PF2e publication identified by a code (e.g., "XMM") with a display name (e.g., "Monster Manual (2025)"). Caching and fetching operate at the source level.
- **Creature (Full)** (`Creature`): A complete creature record with all stat block data (traits, actions, legendary actions, spellcasting, etc.), available only after source data is fetched/uploaded and cached. Identified by a branded `CreatureId`.
+- **Creature (Full)** (`Creature`): A complete creature record with all stat block data (traits, actions, legendary actions, spellcasting, etc.), available only after source data is fetched/uploaded and cached. Identified by a branded `CreatureId`. For PF2e creatures, each spell entry inside `spellcasting` carries full per-spell data (slug, level, traits, range, action cost, target/area, duration, defense, description, heightening) extracted from the embedded `items[type=spell]` data on the source NPC, enabling inline spell description display without additional fetches.
 - **Cached Source Data**: The full normalized bestiary data for a single source, stored in IndexedDB. Contains complete creature stat blocks.
 - **Combatant** (extended): Gains an optional `creatureId` reference to a `Creature`, enabling stat block lookup and stat pre-fill on creation.
 - **Queued Creature**: Transient UI-only state representing a bestiary creature selected for batch-add, containing the creature reference and a count (1+). Not persisted.
@@ -331,3 +367,5 @@ As a DM with a creature pinned, I want to collapse the right (browse) panel inde
 - **SC-019**: PF2e stat blocks render the correct layout (level, three saves, ability modifiers, ability sections) for all PF2e creatures — no D&D-specific fields (CR, ability scores, legendary actions) are shown.
 - **SC-020**: Switching game system immediately changes which creatures appear in search — no page reload required.
 - **SC-021**: Both D&D and PF2e search indexes ship bundled with the app; no network fetch is required to search creatures in either system.
+- **SC-022**: Clicking any spell in a PF2e creature's stat block opens its description display within 100ms — no network I/O is performed.
+- **SC-023**: PF2e spell descriptions are available offline once the bestiary source containing the creature has been cached.
Author	SHA1	Message	Date
Lukas	e2e8297c95	Add Recall Knowledge DC and skill to PF2e stat blocks All checks were successful CI / check (push) Successful in 2m29s Details CI / build-image (push) Successful in 19s Details Display Recall Knowledge line below trait tags showing DC (from level via standard DC-by-level table, adjusted for rarity) and associated skill derived from creature type trait. Omitted for D&D creatures and creatures with no recognized type trait. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-10 18:43:49 +02:00
Lukas	e161645228	Add PF2e spell description popovers in stat blocks All checks were successful CI / check (push) Successful in 2m31s Details CI / build-image (push) Successful in 26s Details Clicking a spell name in a PF2e creature's stat block now opens a popover (desktop) or bottom sheet (mobile) showing full spell details: description, traits, rank, range, target, area, duration, defense, action cost icons, and heightening rules. All data is sourced from the embedded Foundry VTT spell items already in the bestiary cache. - Add SpellReference type replacing bare string spell arrays - Extract full spell data in pf2e-bestiary-adapter (description, traits, traditions, range, target, area, duration, defense, action cost, heightening, overlays) - Strip inline heightening text from descriptions to avoid duplication - Bold save outcome labels (Critical Success/Failure) in descriptions - Bump DB_VERSION to 6 for cache invalidation - Add useSwipeToDismissDown hook for mobile bottom sheet - Portal popover to document.body to escape transformed ancestors Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-10 16:18:08 +02:00
Lukas	9b0cb38897	Fix oxlint --deny-warnings and eliminate all biome-ignores --deny warnings was a no-op (not a valid category); the correct flag is --deny-warnings. Fixed all 8 pre-existing warnings and removed every biome-ignore from source and test files. Simplified the check script to zero-tolerance: any biome-ignore now fails the build. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-10 16:17:30 +02:00
Lukas	5cb5721a6f	Redesign PF2e action icons with diamond-parallel geometry All checks were successful CI / check (push) Successful in 2m27s Details CI / build-image (push) Successful in 18s Details Align cutout edges to 45° angles parallel to outer diamond shape. Multi-action icons use outlined diamonds with matched border width. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-09 01:07:45 +02:00