Stamp 2.56.0 after native taxonomy and skills overlay.

Compose mounts src/taxonomy. Local DeepSeek skills; no Console upload.

periscope/dependency/frontend/content/changelog.md

@@ -2,6 +2,14 @@
 
 What's new in Periscope.
 
+## 2.56.0 — 2026-09-20 — Native taxonomy JSON and local skills overlay
+
+Component taxonomy JSON and DeepSeek `skills/*/SKILL.md` (plus local `validate.py` / schema) live under `periscope/src`. `repo_paths` prefers src; Docker copies dependency then src; compose mounts `src/taxonomy`. Manifest `1.14.0`. App `favicon.ico` matches the Periscope mark. Auth/JWT, package.json, landing png/gif unchanged. Pad≠Via unchanged.
+
+- [New] Periscope taxonomy catalog in `periscope/src/taxonomy` (same subtype keys and spec names).
+- [New] Local extraction skill prompts rewritten; no Anthropic Console upload.
+- [Changed] Compose no longer bind-mounts `dependency/taxonomy` over `/app/taxonomy`.
+
 ## 2.55.0 — 2026-09-20 — Native Next overlay config and CSP seam
 
 `next.config.ts`, ESLint/PostCSS/tsconfig, and `lib/csp-hosts.ts` overlay from `periscope/src/frontend`. `backend/middleware/__init__.py` is a native package marker. JWT stays in inherited `middleware/auth.py`. `package.json` unchanged. Legal markdown already Periscope; changelog kept. Pad≠Via unchanged.

periscope/src/frontend/src/lib/version.ts

@@ -1,3 +1,3 @@
 /** Stamped from content/changelog.md by scripts/sync-version.mjs. */
-export const APP_VERSION = "2.55.0";
+export const APP_VERSION = "2.56.0";
 export const APP_VERSION_DATE = "2026-09-20";