## Summary
Warm the extension-host task stores **up front** at dashboard startup
instead of letting the first `fn_task_*` call lazily boot a second
PostgreSQL pool per project.
## What changed
`packages/cli/src/commands/dashboard.ts`:
- After the dashboard boots, iterate every registered project (from
`centralCoreForEngine.listProjects()`) and call
`setHostTaskStore(p.path, engine.getTaskStore())` for each non-cwd
project that already has a running `ProjectEngine`.
- Reuses each engine's **existing** `TaskStore` directly — no new
backend connection, no schema advisory-lock contention, no extra
connection-pool exhaustion.
- `cwd` is skipped because its store is already injected at startup.
- Per-project failures are non-fatal (warn) and a failed project listing
logs a single warn — dashboard startup never blocks on this.
- `.changeset/extension-host-store-warmup.md` (patch, fix).
## Why
Left on its own, the first extension tool call (`fn_task_update`,
`fn_task_archive`, `fn_agent_show`, …) for a non-cwd project falls
through to `createTaskStoreForBackend`, which boots a **second**
PostgreSQL connection pool on demand. On busy hosts that lazy boot can
time out, or the call stalls behind pool/startup contention — the
classic "first `fn_task_*` call is slow or errors" experience.
Pre-populating from the already-running engines removes that lazy
worst-case path entirely.
## Verification
- `pnpm verify:fast` — PASS (13 steps, 115s): CLI `tsup` build green,
scoped typecheck/build green, boot smoke green (`fn --help` + real
`serve` with `GET /api/health` 200).
- Cherry-picked cleanly onto current `origin/main` (`5532019fd`); branch
is up-to-date with `origin/main` at PR time.
## Files
- `packages/cli/src/commands/dashboard.ts` (+30)
- `.changeset/extension-host-store-warmup.md` (new)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Improved dashboard startup reliability by reusing existing project
task connections.
* Prevented extension task tools from creating duplicate connection
pools.
* Added non-blocking warnings when individual project initialization or
discovery fails.
* Dashboard startup now reports how many project task stores were
successfully prepared.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Co-authored-by: gsxdsm <gsxdsm@users.noreply.github.com>
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