release: v0.30.0 — Code-quality gates (TP-191..195) + 0.29.x carryover

[HenryLach]

Minor release capping the entire code-quality-gates sequence — the moment Taskplane graduates to enforcing typecheck, lint, and format:check at PR time.

Why minor (not patch)

• Observable CI surface change — continue-on-error: true removed from lint; Typecheck and Format check (Biome) added as required steps. Anyone watching the repo sees the quality bar move.
• Behavior changes from TP-195 bug fixes — three real bugs uncovered by typecheck cleanup are now fixed:
  • Preflight cleanup Layers 2-5 now actually run (silently broken since TP-065)
  • max_worker_minutes config now honored (was silently ignored due to camelCase typo)
  • Resume-path failure alerts now carry segment metadata (was always blank due to non-existent-field lookup)
• New lint:fix script in package.json (DX-positive bonus from TP-194)

Per semver, these warrant a minor bump (0.29.x → 0.30.0).

What ships

Code-quality gates (the headline)

• TP-191 Prep: scripts (typecheck / lint / format / format:check / lint:fix), pinned dev deps (Biome 2.4.15, TypeScript 5.6.3, @types/node), pi-shims.d.ts for both @earendil-works/* and @mariozechner/* scopes, tsconfig.ci.json, modernized biome.json (deprecated experimentalScannerIgnores migrated)
• TP-192 Lint cleanup: 9 Biome errors fixed cleanly (noRedeclare ×2, noImplicitAnyLet ×5, noControlCharactersInRegex ×1, noUnsafeFinally ×1) — no biome-ignore suppressions
• TP-193 Format adoption: biome format --write applied across 166 files; .git-blame-ignore-revs preserves blame archaeology; .gitattributes enforces LF line endings on all platforms (Windows core.autocrlf was masking format consistency)
• TP-195 Typecheck cleanup: 264 errors → 0 across runtime source + tests; introduced makeOrchestratorConfig() / makeTaskRunnerConfig() test helpers; pi-shim extended for typed ui.custom<T>(). Plus the 3 bug fixes called out above.
• TP-194 Gate flip: continue-on-error: true removed; Typecheck + Format check (Biome) added as required CI steps; TP-188 reviewer-agent quality-check downgrade rule now unconditional; documentation augmented across AGENTS.md / release-process.md / development-setup.md.

Carried over from 0.29.x [Unreleased]

• Hardcoded @mariozechner/pi-coding-agent path breaks Runtime V2 after rename to @earendil-works #560 + TP-190 / Runtime V2 lane spawn errors are silent — lanes stay 'running' forever, no alert, no failure transition #561 (already shipped as v0.29.1) spawn-failure visibility + scope-tolerant Pi CLI resolution
• v0.29.2 peerDependencies migration to @earendil-works/* with peerDependenciesMeta.optional (kills npm deprecation warnings on pi update)

Spec

• docs/specifications/taskplane/code-quality-gates.md — full 5-packet design rationale, sage review consultation summary, Tier-2 deferred items (coverage, pre-commit hooks, etc.) explicitly tracked

Validation

• Tests: 3627 passing / 1 skipped / 0 failed (Windows local Node 24.15.0)
• Typecheck: exit 0 (TP-195 drove 264 → 0)
• Lint: exit 0 (TP-192 drove 9 errors → 0)
• Format check: exit 0 (TP-193 applied formatter universally)
• Polyrepo end-to-end: ✅ verified by operator on real workspace post-TP-195 (the 3 bug fixes don't regress polyrepo flows)
• All 5 packets merged in sequence: TP-191 → TP-192 → TP-193 → TP-195 → TP-194
• 2 sage post-merge folds applied: TP-193's slice-window-bump + .gitattributes line-endings, TP-195's behavior-change risk assessment
• This release PR runs under the NEW hard gates — first PR ever to be enforced by typecheck + lint + format:check at PR time

Issues closed

(none directly — this release bundles infrastructure work; the bug-fix issues from prior code-quality work plus #559/#560/#561 from TP-187/188/189/190 are already closed in their respective patch releases)

Tag

v0.30.0 will be pushed AFTER this PR merges. Use --merge mode to preserve the version-bump commit so the tag references it correctly.