Improve PF2e stat block action icons, triggers, and tag handling

- Replace unicode action cost chars with custom SVG icons (diamond
  with chevron for actions, outlined diamond for free, curved arrow
  for reaction) rendered inline via ActivityCost on TraitBlock
- Add activity icons to attacks (all Strikes default to single action)
- Add trigger/effect rendering for reaction abilities (bold labels)
- Fix nested tag stripping ({@b ...{@spell ...}...}) by looping
- Move icon after ability name to match AoN format

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web/src/adapters/__tests__/pf2e-bestiary-adapter.test.ts

@@ -197,7 +197,8 @@ describe("normalizePf2eBestiary", () => {
 			});
 			const ability = creature.abilitiesBot?.[0];
 			expect(ability).toBeDefined();
-			expect(ability?.name).toBe("\u25C6 Change Shape");
+			expect(ability?.name).toBe("Change Shape");
+			expect(ability?.activity).toEqual({ number: 1, unit: "action" });
 			expect(ability?.segments[0]).toEqual(
 				expect.objectContaining({
 					type: "text",
@@ -208,7 +209,7 @@ describe("normalizePf2eBestiary", () => {
 			);
 		});
 
-		it("shows free action icon", () => {
+		it("parses free action activity", () => {
 			const [creature] = normalizePf2eBestiary({
 				creature: [
 					minimalCreature({
@@ -224,10 +225,12 @@ describe("normalizePf2eBestiary", () => {
 					}),
 				],
 			});
-			expect(creature.abilitiesBot?.[0]?.name).toBe("\u25C7 Adaptive Strike");
+			const ability = creature.abilitiesBot?.[0];
+			expect(ability?.name).toBe("Adaptive Strike");
+			expect(ability?.activity).toEqual({ number: 1, unit: "free" });
 		});
 
-		it("shows reaction icon", () => {
+		it("parses reaction activity", () => {
 			const [creature] = normalizePf2eBestiary({
 				creature: [
 					minimalCreature({
@@ -243,12 +246,12 @@ describe("normalizePf2eBestiary", () => {
 					}),
 				],
 			});
-			expect(creature.abilitiesMid?.[0]?.name).toBe(
-				"\u21BA Attack of Opportunity",
-			);
+			const ability = creature.abilitiesMid?.[0];
+			expect(ability?.name).toBe("Attack of Opportunity");
+			expect(ability?.activity).toEqual({ number: 1, unit: "reaction" });
 		});
 
-		it("shows multi-action icons", () => {
+		it("parses multi-action activity", () => {
 			const [creature] = normalizePf2eBestiary({
 				creature: [
 					minimalCreature({
@@ -264,9 +267,9 @@ describe("normalizePf2eBestiary", () => {
 					}),
 				],
 			});
-			expect(creature.abilitiesBot?.[0]?.name).toBe(
-				"\u25C6\u25C6 Breath Weapon",
-			);
+			const ability = creature.abilitiesBot?.[0];
+			expect(ability?.name).toBe("Breath Weapon");
+			expect(ability?.activity).toEqual({ number: 2, unit: "action" });
 		});
 
 		it("renders ability without activity or traits normally", () => {
@@ -287,6 +290,7 @@ describe("normalizePf2eBestiary", () => {
 			const ability = creature.abilitiesBot?.[0];
 			expect(ability).toBeDefined();
 			expect(ability?.name).toBe("Constrict");
+			expect(ability?.activity).toBeUndefined();
 			expect(ability?.segments[0]).toEqual(
 				expect.objectContaining({
 					type: "text",
@@ -294,6 +298,35 @@ describe("normalizePf2eBestiary", () => {
 				}),
 			);
 		});
+
+		it("includes trigger text before entries", () => {
+			const [creature] = normalizePf2eBestiary({
+				creature: [
+					minimalCreature({
+						abilities: {
+							mid: [
+								{
+									name: "Wing Deflection",
+									activity: { number: 1, unit: "reaction" },
+									trigger: "The dragon is targeted with an attack.",
+									entries: ["The dragon raises its wing."],
+								},
+							],
+						},
+					}),
+				],
+			});
+			const ability = creature.abilitiesMid?.[0];
+			expect(ability).toBeDefined();
+			expect(ability?.activity).toEqual({ number: 1, unit: "reaction" });
+			expect(ability?.trigger).toBe("The dragon is targeted with an attack.");
+			expect(ability?.segments[0]).toEqual(
+				expect.objectContaining({
+					type: "text",
+					value: "The dragon raises its wing.",
+				}),
+			);
+		});
 	});
 
 	describe("resistances formatting", () => {

apps/web/src/adapters/__tests__/strip-tags.test.ts

@@ -138,12 +138,20 @@ describe("stripTags", () => {
 		);
 	});
 
-	it("handles nested tags gracefully", () => {
+	it("handles sibling tags in the same string", () => {
 		expect(
 			stripTags("The spell {@spell Fireball|XPHB} deals {@damage 8d6}."),
 		).toBe("The spell Fireball deals 8d6.");
 	});
 
+	it("handles nested tags (outer wrapping inner)", () => {
+		expect(
+			stripTags(
+				"{@b Arcane Innate Spells DC 24; 3rd {@spell fireball}, {@spell slow}}",
+			),
+		).toBe("Arcane Innate Spells DC 24; 3rd fireball, slow");
+	});
+
 	it("handles text with no tags", () => {
 		expect(stripTags("Just plain text.")).toBe("Just plain text.");
 	});

apps/web/src/adapters/pf2e-bestiary-adapter.ts

@@ -47,6 +47,7 @@ interface RawDefenses {
 interface RawAbility {
 	name?: string;
 	activity?: { number?: number; unit?: string };
+	trigger?: string;
 	traits?: string[];
 	entries?: RawEntry[];
 }
@@ -81,20 +82,15 @@ function capitalize(s: string): string {
 	return s.charAt(0).toUpperCase() + s.slice(1);
 }
 
-function formatActivityIcon(
+function parseActivity(
 	activity: { number?: number; unit?: string } | undefined,
-): string {
-	if (!activity) return "";
-	switch (activity.unit) {
-		case "free":
-			return "\u25C7 ";
-		case "reaction":
-			return "\u21BA ";
-		case "action":
-			return "\u25C6".repeat(activity.number ?? 1) + " ";
-		default:
-			return "";
+): { number: number; unit: "action" | "free" | "reaction" } | undefined {
+	if (!activity?.unit) return undefined;
+	const unit = activity.unit;
+	if (unit === "action" || unit === "free" || unit === "reaction") {
+		return { number: activity.number ?? 1, unit };
 	}
+	return undefined;
 }
 
 function stripAngleBrackets(s: string): string {
@@ -262,28 +258,34 @@ function normalizeAbilities(
 		.filter((a) => a.name)
 		.map((a) => {
 			const raw = a as Record<string, unknown>;
-			const icon = formatActivityIcon(a.activity);
+			const activity = parseActivity(a.activity);
+			const trigger = a.trigger ? stripTags(a.trigger) : undefined;
 			const traits =
 				a.traits && a.traits.length > 0
 					? `(${a.traits.map((t) => capitalize(stripAngleBrackets(stripTags(t)))).join(", ")}) `
 					: "";
+			const prefix = traits;
 			const body = Array.isArray(a.entries)
 				? segmentizeEntries(a.entries)
 				: formatAffliction(raw);
-			const name = icon + stripTags(a.name as string);
-			if (traits && body.length > 0 && body[0].type === "text") {
+			const name = stripTags(a.name as string);
+			if (prefix && body.length > 0 && body[0].type === "text") {
 				return {
 					name,
+					activity,
+					trigger,
 					segments: [
-						{ type: "text" as const, value: traits + body[0].value },
+						{ type: "text" as const, value: prefix + body[0].value },
 						...body.slice(1),
 					],
 				};
 			}
 			return {
 				name,
-				segments: traits
-					? [{ type: "text" as const, value: traits }, ...body]
+				activity,
+				trigger,
+				segments: prefix
+					? [{ type: "text" as const, value: prefix }, ...body]
 					: body,
 			};
 		});
@@ -306,6 +308,7 @@ function normalizeAttacks(
 			: "";
 		return {
 			name: capitalize(stripTags(a.name)),
+			activity: { number: 1, unit: "action" as const },
 			segments: [
 				{
 					type: "text" as const,

apps/web/src/adapters/strip-tags.ts

@@ -98,20 +98,26 @@ export function stripTags(text: string): string {
 	// Generic tags: {@tag Display|Source|...} → Display (first segment before |)
 	// Covers: spell, condition, damage, dice, variantrule, action, skill,
 	//         creature, hazard, status, plus any unknown tags
-	result = result.replaceAll(
-		/\{@(\w+)\s+([^}]+)\}/g,
-		(_, tag: string, content: string) => {
-			// For tags with Display|Source format, extract first segment
-			const segments = content.split("|");
+	// Run in a loop to resolve nested tags (e.g. {@b ... {@spell fireball} ...})
+	// from innermost to outermost.
+	const tagPattern = /\{@(\w+)\s+([^}]+)\}/g;
+	while (tagPattern.test(result)) {
+		result = result.replaceAll(
+			tagPattern,
+			(_, tag: string, content: string) => {
+				const segments = content.split("|");
 
-			// Some tags have a third segment as display text: {@variantrule Name|Source|Display}
-			if ((tag === "variantrule" || tag === "action") && segments.length >= 3) {
-				return segments[2];
-			}
+				if (
+					(tag === "variantrule" || tag === "action") &&
+					segments.length >= 3
+				) {
+					return segments[2];
+				}
 
-			return segments[0];
-		},
-	);
+				return segments[0];
+			},
+		);
+	}
 
 	return result;
 }

apps/web/src/components/stat-block-parts.tsx

@@ -1,4 +1,8 @@
-import type { TraitBlock, TraitSegment } from "@initiative/domain";
+import type {
+	ActivityCost,
+	TraitBlock,
+	TraitSegment,
+} from "@initiative/domain";
 
 export function PropertyLine({
 	label,
@@ -57,10 +61,91 @@ function TraitSegments({
 	);
 }
 
+const ACTION_DIAMOND = "M50 2 L96 50 L50 98 L4 50 Z M48 28 L78 50 L48 72 Z";
+const ACTION_DIAMOND_SOLID = "M50 2 L96 50 L50 98 L4 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 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 }>) {
+	const cls = "inline-block h-[1em] align-[-0.1em]";
+	if (activity.unit === "free") {
+		return (
+			<svg aria-hidden="true" className={cls} viewBox="0 0 100 100">
+				<path d={FREE_ACTION_DIAMOND} fill="currentColor" fillRule="evenodd" />
+				<path d={FREE_ACTION_CHEVRON} fill="currentColor" />
+			</svg>
+		);
+	}
+	if (activity.unit === "reaction") {
+		return (
+			<svg aria-hidden="true" className={cls} viewBox="0 0 100 100">
+				<g transform="translate(100,100) rotate(180)">
+					<path d={REACTION_ARROW} fill="currentColor" />
+				</g>
+			</svg>
+		);
+	}
+	const count = activity.number;
+	if (count === 1) {
+		return (
+			<svg aria-hidden="true" className={cls} viewBox="0 0 100 100">
+				<path d={ACTION_DIAMOND} fill="currentColor" fillRule="evenodd" />
+			</svg>
+		);
+	}
+	if (count === 2) {
+		return (
+			<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"
+					fill="currentColor"
+					fillRule="evenodd"
+				/>
+			</svg>
+		);
+	}
+	return (
+		<svg aria-hidden="true" className={cls} viewBox="0 0 180 100">
+			<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"
+				fill="currentColor"
+				fillRule="evenodd"
+			/>
+		</svg>
+	);
+}
+
 export function TraitEntry({ trait }: Readonly<{ trait: TraitBlock }>) {
 	return (
 		<div className="text-sm">
-			<span className="font-semibold italic">{trait.name}.</span>
+			<span className="font-semibold italic">
+				{trait.name}
+				{trait.activity ? null : "."}
+				{trait.activity ? (
+					<>
+						{" "}
+						<ActivityIcon activity={trait.activity} />
+					</>
+				) : null}
+			</span>
+			{trait.trigger ? (
+				<>
+					{" "}
+					<span className="font-semibold">Trigger</span> {trait.trigger}
+					{trait.segments.length > 0 ? (
+						<>
+							{" "}
+							<span className="font-semibold">Effect</span>
+						</>
+					) : null}
+				</>
+			) : null}
 			<TraitSegments segments={trait.segments} />
 		</div>
 	);