fix: rename all packages from @mosaic/* to @mosaicstack/*

- Updated all package.json name fields and dependency references
- Updated all TypeScript/JavaScript imports
- Updated .woodpecker/publish.yml filters and registry paths
- Updated tools/install.sh scope default
- Updated .npmrc registry paths (worktree + host)
- Enhanced update-checker.ts with checkForAllUpdates() multi-package support
- Updated CLI update command to show table of all packages
- Added KNOWN_PACKAGES, formatAllPackagesTable, getInstallAllCommand
- Marked checkForUpdate() with @deprecated JSDoc

Closes #391

docs/scratchpads/task-mission-ownership-20260313.md

@@ -35,14 +35,14 @@ Close ownership gaps so task listing/creation and mission creation enforce proje
 
 ## Verification Log
 
-- `pnpm --filter @mosaic/gateway test -- src/__tests__/resource-ownership.test.ts`
+- `pnpm --filter @mosaicstack/gateway test -- src/__tests__/resource-ownership.test.ts`
   - Red: failed with 2 expected permission-path failures before controller changes.
   - Green: passed after wiring ownership checks and adding owned-task filtering coverage.
-- `pnpm --filter @mosaic/gateway typecheck`
+- `pnpm --filter @mosaicstack/gateway typecheck`
   - Pass on 2026-03-13 after fixing parameter ordering and mission project nullability.
-- `pnpm --filter @mosaic/gateway lint`
+- `pnpm --filter @mosaicstack/gateway lint`
   - Pass on 2026-03-13.
-- `pnpm --filter @mosaic/gateway test`
+- `pnpm --filter @mosaicstack/gateway test`
   - Pass on 2026-03-13 with 3 test files and 23 tests passing.
 - `pnpm format:check`
   - Pass on 2026-03-13.