Add native React Skills example and enforce read-only skill mount

apps/website/content/AGENTS.md.template

@@ -126,3 +126,5 @@ Element Rendering has an experimental local React preview at https://threadplane
 The private React render entry also accepts an optional `ReactRenderFunctions` host map for authored `$computed` expressions. `RenderComputedFunction` receives owned recursively frozen arguments and synchronously returns `RenderValue`; calculations must be pure and can run repeatedly during React rendering. Plain or null-prototype maps admit own callable data entries, including non-enumerable entries, and reject accessors, symbols and non-callable values. Results retain the existing plain-data ownership guards. This adds no actions, watchers, state ownership or asynchronous effect execution, and raw specs still cannot contain executable callbacks.
 
 Computed Functions has an experimental local React preview at https://threadplane.ai/docs/render/api/provide-render?frontend=react. Three authored samples preserve native $computed expressions and use RenderSpec.functions for uppercase/reverse text, products and browser-local dates. Only complete expression nodes calculate; numeric/date prefixes never publish provisional results. Heading/Card/Value display resolved props and native children. Pure synchronous callbacks receive owned frozen arguments and may run repeatedly. Play/Pause, seek, Finish and Reset share one bounded private parser owner; sample changes and page exit revoke old callbacks. It makes no backend or model requests. Build with `npx nx build cockpit-render-computed-functions-react` and verify with `npx nx e2e cockpit-render-computed-functions-react`.
+
+The native Skills React preview at https://threadplane.ai/docs/deep-agents/capabilities/skills?frontend=react shares the existing Python Skills graph and enforced read-only /skills/ mount with Angular. Its prompt index contains skill names, descriptions, and instruction paths; bodies and references load on demand. PrivateStateAttr excludes Skills keys from declared input/output schemas, while the pinned graph exposes metadata in root values and checkpoints. Optional load errors can appear when produced and normal loads can omit them. Its named custom visibility event always includes both keys, using an empty-list fallback for load errors. The React preview distinguishes requested paths from successfully inspected tool results; Angular shows requested paths without result validation. Saved index authority and read evidence are separate, and archived evidence cannot authorize Send. Stop or page exit revokes active work. This Skills contract makes no inference about Memory visibility. Build with `npx nx build cockpit-deep-agents-skills-react` and verify with `npx nx e2e cockpit-deep-agents-skills-react`; React remains a private source-build package.

apps/website/content/CLAUDE.md.template

@@ -126,3 +126,5 @@ Element Rendering has an experimental local React preview at https://threadplane
 The private React render entry also accepts an optional `ReactRenderFunctions` host map for authored `$computed` expressions. `RenderComputedFunction` receives owned recursively frozen arguments and synchronously returns `RenderValue`; calculations must be pure and can run repeatedly during React rendering. Plain or null-prototype maps admit own callable data entries, including non-enumerable entries, and reject accessors, symbols and non-callable values. Results retain the existing plain-data ownership guards. This adds no actions, watchers, state ownership or asynchronous effect execution, and raw specs still cannot contain executable callbacks.
 
 Computed Functions has an experimental local React preview at https://threadplane.ai/docs/render/api/provide-render?frontend=react. Three authored samples preserve native $computed expressions and use RenderSpec.functions for uppercase/reverse text, products and browser-local dates. Only complete expression nodes calculate; numeric/date prefixes never publish provisional results. Heading/Card/Value display resolved props and native children. Pure synchronous callbacks receive owned frozen arguments and may run repeatedly. Play/Pause, seek, Finish and Reset share one bounded private parser owner; sample changes and page exit revoke old callbacks. It makes no backend or model requests. Build with `npx nx build cockpit-render-computed-functions-react` and verify with `npx nx e2e cockpit-render-computed-functions-react`.
+
+The native Skills React preview at https://threadplane.ai/docs/deep-agents/capabilities/skills?frontend=react shares the existing Python Skills graph and enforced read-only /skills/ mount with Angular. Its prompt index contains skill names, descriptions, and instruction paths; bodies and references load on demand. PrivateStateAttr excludes Skills keys from declared input/output schemas, while the pinned graph exposes metadata in root values and checkpoints. Optional load errors can appear when produced and normal loads can omit them. Its named custom visibility event always includes both keys, using an empty-list fallback for load errors. The React preview distinguishes requested paths from successfully inspected tool results; Angular shows requested paths without result validation. Saved index authority and read evidence are separate, and archived evidence cannot authorize Send. Stop or page exit revokes active work. This Skills contract makes no inference about Memory visibility. Build with `npx nx build cockpit-deep-agents-skills-react` and verify with `npx nx e2e cockpit-deep-agents-skills-react`; React remains a private source-build package.