Found while testing the showcase package's metadata designers in Studio against an isolated showcase backend. Two designers had zero instances (nothing to render), plus a real designer coverage gap.

1. hook examples (0 → 3)

examples/app-showcase/src/hooks/ wired via defineStack({ hooks }):

• showcase_normalize_task_title — beforeInsert/beforeUpdate, L2 JS body trimming the title (multi-event, mutates ctx.input).
• showcase_audit_task_completion — afterUpdate gated by a CEL condition, async with a retryPolicy, onError: log, capabilities: [log].
• showcase_warn_over_budget — afterUpdate on showcase_project.

Bodies use the real After-hook context (ctx.result / ctx.input — there is no ctx.record) and are guarded with typeof ctx.log === 'function' so both a fresh seed and a warm restart boot with 0 hook errors.

2. AI tool examples (0 → 2)

FindProjectTool was defined via defineTool but never imported into the config or passed to defineStack, so the tool designer was empty and the ProjectOps skill's tools: ['showcase_find_project'] reference dangled. Wired via defineStack({ tools }) and added a second object-bound tool (showcase_summarize_project_tasks — objectName + requiresConfirmation) so the designer covers both shapes; the skill now references both.

3. fix(spec) — complete hook designer coverage

The hook form's Execution section exposed async / onError / condition but omitted retryPolicy and the top-level timeout (both real HookSchema props). Added a retryPolicy composite + timeout field.

Verification (browser, isolated showcase backend)

• Hook list 0 → 3; tool list 0 → 2.
• Hook designer renders every property incl. the composite body editor (real JS, not [object Object]) and Execution: async / onError / Timeout / condition / Retry Policy → Max Retries / Backoff Ms.
• Tool designer renders name/label/description/category/objectName/active/builtIn/requiresConfirmation + the parameters JSON schema as an input-params table + example LLM call.
• Fresh DB seed + warm restart: 0 runtime errors.
• Also verified the field-zoo object designer renders ~28 distinct field-type widgets; showcase is banner-clean.

Note (out of scope, pre-existing)

The showcase's own pnpm typecheck is already red on main (not in the CI gate): the Field.* builders type predicate params with the output type (z.infer), so the documented string shorthand for requiredWhen / visibleWhen / readonlyWhen fails tsc even though it's valid at runtime. That's a spec type-ergonomics fix (use z.input), best done separately.

🤖 Generated with Claude Code