…errors (#275)

## Summary

The audit listed **B3 (\"AI keys stored unencrypted\")** as a gap, but
\`apps/desktop/src/main/services/aiKeyStorage.ts\` has been using
Electron \`safeStorage\` since the file was introduced. AI keys are
already OS-encrypted: macOS Keychain / Windows DPAPI / Linux libsecret.
**No new dependency needed — \`safeStorage\` is the right call here,
exactly as you said.**

However, while reviewing the file for the audit, I found a **real bug**
worth shipping in this PR.

## The real bug

\`readKeys()\` used a catch-all that treated any decryption / parse
failure as corruption and deleted the encrypted file:

\`\`\`ts
} catch (error) {
  if ((error as NodeJS.ErrnoException).code === 'ENOENT') {
    return {};
  }
  // Decryption or parsing failed - clear corrupted file
  await this.clearAll();  // ← silent data loss
  return {};
}
\`\`\`

On macOS the keychain becomes **temporarily** inaccessible after
sleep/wake (and on Linux when libsecret hasn't unlocked yet).
\`safeStorage.decryptString()\` throws during that window. The previous
code interpreted that as corruption and wiped the file → user's AI keys
gone, with no error surfaced.

## New error contract

| Condition | Behavior |
|---|---|
| ENOENT on read | Return \`{}\` (no keys yet) |
| \`isEncryptionAvailable()\` → false | Throw
\`AiKeyEncryptionUnavailableError\` |
| \`safeStorage.decryptString\` throws | Throw \`AiKeyDecryptionError\`
(cause preserved) |
| \`JSON.parse\` fails | Throw \`AiKeyDecryptionError\` |
| Top-level shape is not an object | Throw \`AiKeyDecryptionError\` |

**The encrypted file is never auto-deleted on a read path now.** The
only delete sites are:
- Explicit \`removeKey()\` that empties the map → \`unlinkFile()\`
- (No other paths.)

Errors propagate to the IPC layer, where \`defineIpcHandler\` from #272
wraps them in a structured response for the renderer.

## Why this matters

Before this fix, the failure mode for a user whose keychain happened to
be locked at the wrong moment was: open the AI panel → see \"no keys\" →
re-enter all their provider keys → next sleep/wake cycle: repeat. The
fix surfaces a real error (\"keychain locked, retry\") instead of
silently destroying state.

## Test plan

- [x] \`pnpm -r typecheck\` — green.
- [x] \`pnpm test\` — 17/17 packages.
- [ ] Manual on macOS: save an AI key, sleep the machine for a few
minutes, wake up, immediately open AI panel. Before this fix: keys may
be gone. After: either keys load normally OR a clear error surfaces and
a retry works.
- [ ] Manual on Linux without libsecret: expect
\`AiKeyEncryptionUnavailableError\` with the message pointing at
libsecret/gnome-keyring/kwallet.

## Stack context

**PR-F2** in the audit stack. Stacked on top of #274 (PR-F5) → #273
(PR-F4) → #272 (PR-F1) → #271 (PR-I) → #270 (PR-J) → #269 (PR-D) → #268
(PR-H) → #267 (PR-C) → #266 (PR-A) → #265 (PR-B).

## Up next

**PR-F3**: Ed25519 license verification — server signs license payload
with private key, desktop verifies with embedded public key. No
symmetric secrets on the client. Coming as the next PR in the stack.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

…F3) (#276)

## Summary

Adds the asymmetric verification primitive the desktop needs so the
license server can sign subscription state and the client can verify it
**without holding any signing secret**. This is the foundation; no live
wiring yet — those follow once the server emits signed envelopes.

Per your review: **Ed25519, not HMAC** — a client that can verify a
symmetric MAC can also forge it.

## Wire format

\`\`\`ts
{
  payload: {
    payloadVersion: 1,
    subscription: { /* SubscriptionInfo */ },
    issuedAt: "2026-06-08T12:00:00.000Z",
    ttlSeconds?: 3600  // optional, server-suggested max age
  },
  signature: "<base64 Ed25519 signature>"
}
\`\`\`

Signature is computed over \`canonicalJson(payload)\` — a deterministic
sorted-key JSON encoding. \`JSON.stringify\` is **not** deterministic
across runtimes, so the canonical encoder is mandatory.

## Files

| File | Change |
|---|---|
| \`packages/licensing/src/types.ts\` | Add
\`SignedSubscriptionPayload\` + \`SignedSubscriptionEnvelope\` types |
| \`packages/licensing/src/validator.ts\` | Add \`canonicalJson\`,
\`signSubscriptionPayload\` (server), \`verifySubscriptionSignature\`
(client). \`DEFAULT_SUBSCRIPTION_PUBLIC_KEY\` is an all-zeros
placeholder with a REPLACE BEFORE SHIPPING note |
| \`packages/licensing/src/index.ts\` | Re-export the new types +
functions |
| \`packages/licensing/__tests__/subscriptionSignature.test.ts\` | **18
new tests** (103 total in the package now) |
| \`packages/licensing/README.md\` | Wire format, server flow, embedded
public key, key rotation, why trial.json is **not** signed |

## What \`verifySubscriptionSignature\` checks

1. Envelope shape (\`payload\` + \`signature\` strings present).
2. Payload shape (\`payloadVersion: 1\`, \`issuedAt\`,
\`subscription\`).
3. Ed25519 signature against the public key (or
\`DEFAULT_SUBSCRIPTION_PUBLIC_KEY\` if the caller doesn't pass one — and
the default will fail until replaced).
4. Replay window — rejects envelopes older than \`maxAgeSeconds\`
(defaults to \`payload.ttlSeconds\`, else 7 days).
5. Future-timestamp window — tolerates 60s clock skew but rejects
obviously-future \`issuedAt\` values.
6. Subscription field/period validation (delegates to existing
\`verifySubscription\`).

Injectable clock (\`config.nowMs\`) makes timing tests deterministic.

## What is NOT in this PR (intentional)

- **Live wiring** into \`FileLicenseStorage\` / \`licenseHandlers.ts\`.
Wiring would lock out every user before the server emits signed
envelopes. Wiring lands as a follow-up once the server is ready.
- **Real public key.** \`DEFAULT_SUBSCRIPTION_PUBLIC_KEY\` is all zeros.
Replacing it is a deliberate, separate change — coordinated with
whichever release first ships signed envelopes.
- **Trial signing.** Trial state remains unsigned by design (no
server-side trial registration; subscription is the real boundary). The
README explains.

## Test plan

- [x] \`pnpm --filter @readied/licensing test\` — **103/103 tests** pass
(5 files; 18 new in this PR).
- [x] \`pnpm -r typecheck\` — green across the monorepo.
- [ ] Server team uses \`signSubscriptionPayload\` to start signing.
After enough clients have the new code, the embedded public key is
replaced and live verification is enabled in a follow-up PR.

## Stack context

**PR-F3** in the audit stack. Stacked on top of #275 (PR-F2) → #274
(PR-F5) → #273 (PR-F4) → #272 (PR-F1) → #271 (PR-I) → #270 (PR-J) → #269
(PR-D) → #268 (PR-H) → #267 (PR-C) → #266 (PR-A) → #265 (PR-B).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

## Summary

Lands the **infrastructure** for end-to-end testing the desktop app: a
Playwright + Electron setup with per-test isolation, two initial specs,
and a Linux CI job. The CI job ships as **\`continue-on-error: true\`**
while we stabilize — flip it off in a follow-up once it's reliably green
on develop.

## Files

| File | Purpose |
|---|---|
| \`apps/desktop/playwright.config.ts\` | Serial workers (Electron app
state is shared), generous timeouts, retain-on-failure trace/video |
| \`apps/desktop/e2e/fixtures.ts\` | \`launchApp()\` helper — fresh
Electron instance with isolated \`userData\` per test via \`mkdtemp\`;
\`_electron.launch\` API |
| \`apps/desktop/e2e/tsconfig.json\` | Dedicated tsconfig so specs don't
pull in renderer/main types |
| \`apps/desktop/e2e/smoke.spec.ts\` | App launches, window renders, IPC
bridge present, no uncaught console errors during mount |
| \`apps/desktop/e2e/notes.spec.ts\` | Notes IPC contract —
create/list/get roundtrip, FTS5 search |
| \`apps/desktop/e2e/README.md\` | How to run locally, what's tested,
what's out of scope |
| \`apps/desktop/package.json\` | \`@playwright/test\` devDep, \`e2e\` +
\`e2e:headed\` scripts, \`typecheck:e2e\` folded into \`typecheck\` |
| \`.github/workflows/ci.yml\` | New \`e2e\` job, ubuntu + xvfb, uploads
playwright-report on failure |
| \`.gitignore\` | Excludes \`test-results/\`, \`playwright-report/\`,
\`playwright/.cache/\` |
| \`knip.json\` | Registers \`playwright.config.ts\` + \`e2e/**/*.ts\` |

## Why drive the preload bridge, not the editor UI

\`notes.spec.ts\` calls \`window.readied.notes.*\` directly via
\`page.evaluate\` instead of typing in the CodeMirror surface. Reasons:
1. **Selectors churn**, contracts are stable.
2. The preload bridge is the same surface the renderer uses — anything
that breaks here breaks the renderer too.
3. CodeMirror flake on hotkeys / IME / focus is a class of pain we don't
need until the editor is split.

Future UI-level specs land once \`MarkdownEditor.tsx\` is split (PR-G
follow-up).

## Specs in this PR

### \`smoke.spec.ts\`

1. App launches, main window has non-zero size, IPC bridge present.
2. Console produces no uncaught errors in the first 3 seconds (ignoring
known noise like \"Sentry: No DSN configured\"). This is the regression
catch for #266 — the editor mount crashes that produced blank windows.

### \`notes.spec.ts\`

1. \`create → list → read\` roundtrip works.
2. \`search\` via FTS5 finds a freshly-created note via a unique marker.

## What's deliberately NOT here

- Editor UI interactions (typing, formatting, hotkeys) — too prone to
flake without per-spec selectors. Revisit after editor split.
- AI panel streaming — better as a vitest test against
\`@readied/ai-core\`.
- Sync flows — need a fake server.

## Honest disclaimer

**I scaffolded all of this but could NOT execute the suite end-to-end
against a real Electron build in this session** (no display attached, no
built bundle in this branch). The CI's \`continue-on-error\` gate and
the local README acknowledge that the first verifier on a real machine
may need to tweak the specs once they meet a real renderer.

## Test plan

- [x] \`pnpm --filter @readied/desktop typecheck\` — green (includes new
\`typecheck:e2e\`).
- [x] \`pnpm test\` — 17/17 packages.
- [ ] Run \`pnpm --filter @readied/desktop build && pnpm --filter
@readied/desktop e2e\` locally on macOS to confirm both specs pass
against the real bundle. Adjust selectors / bridge shape if reality
drifts from the assumed types.
- [ ] Push to a feature branch and watch the CI \`e2e\` job. Confirm
artifacts upload on intentional failure.

## Stack context

**PR-E** in the audit stack. Stacked on top of #276 (PR-F3) → #275
(PR-F2) → #274 (PR-F5) → #273 (PR-F4) → #272 (PR-F1) → #271 (PR-I) →
#270 (PR-J) → #269 (PR-D) → #268 (PR-H) → #267 (PR-C) → #266 (PR-A) →
#265 (PR-B). 13 PRs deep.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

…es (PR-G) (#278)

## Summary

**First scoped slice of the PR-G \"split god files\" effort.**

\`apps/desktop/src/main/index.ts\` goes from **1065 → 950 lines**
(-11%). No behavior change. All extractions are self-contained and
surface-area preserving — no API changes, no runtime touch.

## What moved

| New file | Was at | Notes |
|---|---|---|
| \`services/fileLicenseStorage.ts\` | \`index.ts:146–216\` | Three
\`readJsonOrNull\` helpers fold the repeated try/catch/return-null
pattern into one private function. Header comment points at PR-F3 so the
next step (move to signed envelopes) is unambiguous. |
| \`services/windowState.ts\` | \`index.ts:218–254\` | Header comment
now documents *why* the file I/O is synchronous (called during
\`BrowserWindow\` construction before the renderer mounts, and during
close where handlers don't await). |

## What this PR DELIBERATELY does NOT touch

Per your earlier guidance about merge-conflict risk:

| File | Why deferred |
|---|---|
| \`packages/storage-sqlite/src/repositories/SQLiteNoteRepository.ts\`
(1121 L) | Splitting into \`NoteCrudRepository\` + \`NoteTagRepository\`
+ \`NoteArchiveRepository\` + \`NoteSyncRepository\` needs runtime
verification against a real DB. Risk of merge conflicts with every other
in-flight PR. Separate effort. |
| \`apps/desktop/src/renderer/components/MarkdownEditor.tsx\` (724 L) |
The CodeMirror surface is too entangled to split without an E2E suite to
catch regressions. Defer until PR-E (#277) is stabilized; then refactor
under test coverage. |

The principle is established here: surgical extractions of
self-contained pieces, each verifying typecheck+tests, no behavior
change. Future PRs can keep slicing under the same discipline.

## Test plan

- [x] \`pnpm -r typecheck\` — green
- [x] \`pnpm test\` — 17/17 packages
- [x] \`pnpm --filter @readied/desktop typecheck\` — green (includes the
e2e tsconfig from #277)
- [ ] Manual smoke: launch the app, confirm window remembers its
position after close+reopen, confirm license/trial files still
read/write correctly

## Stack context

**PR-G** in the audit stack. Stacked on top of #277 (PR-E) → #276
(PR-F3) → #275 (PR-F2) → #274 (PR-F5) → #273 (PR-F4) → #272 (PR-F1) →
#271 (PR-I) → #270 (PR-J) → #269 (PR-D) → #268 (PR-H) → #267 (PR-C) →
#266 (PR-A) → #265 (PR-B). **14 PRs deep.**

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

## Summary

First slice of the knip cleanup. Knip surfaced 28 unused files in #267.
After per-file verification (greps, import tracing, barrel resolution),
**12 were genuinely orphaned** — those are deleted here. The rest stay
for reasons documented below.

## Deleted (12 files, 659 lines)

### \`apps/desktop\`

| File | Why safe |
|---|---|
| \`src/renderer/analytics.ts\` | No imports anywhere |
| \`src/renderer/hooks/useTheme.ts\` | No imports anywhere |
| \`src/renderer/settings.tsx\` | No imports anywhere (the real settings
entry is \`pages/settings/SettingsApp.tsx\`, loaded via dynamic import
in \`main.tsx\`) |
| \`src/renderer/ui/patterns/Modal.tsx\` + \`index.ts\` +
\`Modal.module.css\` + \`.gitkeep\` | Only the barrel imported
\`Modal\`, and the barrel itself was unused — both go together |

### \`packages\`

| File | Why safe |
|---|---|
| \`plugin-api/src/editor/types.ts\` | Not re-exported by
\`plugin-api/src/index.ts\` |
|
\`storage-core/src/{interfaces,migrations,repositories,types}/index.ts\`
| Main package index imports directly from concrete files, not these
barrels |
| \`storage-sqlite/src/repositories/index.ts\` | Same — concrete
imports, no barrel use |

### \`scripts\`

| File | Why safe |
|---|---|
| \`scripts/bump-version.js\` | Not referenced by any \`package.json\`
script or CI workflow |

## Kept (Knip false positives)

### Auto-discovered files Knip can't see

| File | Why kept |
|---|---|
| \`apps/desktop/src/renderer/vite-env.d.ts\` | \`/// <reference
types="vite/client" />\` — required by Vite |
| \`apps/desktop/src/renderer/css-modules.d.ts\` | TypeScript module
shim for CSS module imports |
| \`apps/desktop/src/renderer/turndown-plugin-gfm.d.ts\` | TypeScript
module shim for an untyped npm dep |
| \`apps/web/mdx-components.tsx\` | Next.js convention —
auto-discovered, never imported |

### Knip wrong about being unused

| File | Reality |
|---|---|
|
\`renderer/pages/settings/components/controls/{NumberInput,Select,TextInput,Toggle}.tsx\`
| Imported by EditorSection / AiSection / UpdatesSection **through** the
\`controls/index.ts\` barrel. Knip flagged both the components and the
barrel as unused because it doesn't follow the chain. |

## Skipped (out of audit scope)

apps/web cleanup: \`magicui/*\`, \`NavDropdown\`, \`ui/separator\`. The
audit excluded apps/web; leaving them for a separate marketing-site
pass.

## Test plan

- [x] \`pnpm -r typecheck\` — green
- [x] \`pnpm test\` — 17/17 packages
- [ ] Manual smoke after merge

## What's next in this cleanup track

- **PR-Knip-2**: remove unused production + dev dependencies (the
\`Unused dependencies (9)\` block from knip)
- **PR-Knip-3**: remove unused exports (the \`Unused exports (~100)\`
block) — much more careful, since some exports may be public API
contracts for plugins or external consumers

## Stack context

Stacked on top of #278 (PR-G) → #277 (PR-E) → #276 (PR-F3) → #275
(PR-F2) → #274 (PR-F5) → #273 (PR-F4) → #272 (PR-F1) → #271 (PR-I) →
#270 (PR-J) → #269 (PR-D) → #268 (PR-H) → #267 (PR-C) → #266 (PR-A) →
#265 (PR-B). **15 PRs deep.**

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

## Why this PR

The audit stack (#266 through #284) was structured as 19 stacked PRs,
each one's base pointing at its predecessor in the chain. Each merged
into **its own parent branch**, not into \`develop\`. Net result:
\`develop\` only contains #265, and the other 19 PRs are stranded on
their branch tips.

This PR ships the head of the stack
(\`chore/set-subscription-public-key\`) into \`develop\` so the work
actually lands. It's a single PR with **21 commits** — the linear chain
of the stack — preserving each individual PR's conventional commit
message so semantic-release can categorise them for the next release.

## What's in this PR (in merge order)

| # | Commit | Title |
|---|---|---|
| 1 | \`3412e4e\` | fix(typecheck): unblock pnpm -r typecheck after TS
6.x bump (already merged as squash in develop — no-op overlap) |
| 2 | \`03da9cb\` | fix(editor): stop runtime crashes in MarkdownEditor
|
| 3 | \`07a76d6\` | chore(tooling): replace husky with lefthook, add
knip, tighten lint-staged |
| 4 | \`e27f1ba\` | refactor(stores): use named selectors instead of
destructuring full state |
| 5 | \`c519fc3\` | chore(test): add coverage baseline + smoke tests for
@readied/commands |
| 6 | \`5b1cc55\` | chore(mcp-server): migrate to registerTool API +
FTS5 for read_note |
| 7 | \`0eb49a5\` | fix(backup): integrity-check restored db and roll
back on failure |
| 8 | \`402e280\` | refactor(ipc): add typed IPC registry, migrate
aiKeyHandlers as proof |
| 9 | \`dd4823d\` | refactor(ipc): migrate light handlers to
defineIpcHandler |
| 10 | \`5607100\` | refactor(ipc): migrate heavy data handlers to
defineIpcHandler |
| 11 | \`c51c4d3\` | fix(aiKeyStorage): stop deleting encrypted keys on
transient decrypt errors |
| 12 | \`d5f33ef\` | feat(licensing): add Ed25519 subscription envelope
sign + verify |
| 13 | \`5ba96d4\` | feat(e2e): scaffold Playwright Electron suite + CI
job |
| 14 | \`2bd1396\` | refactor(main): extract FileLicenseStorage and
window state to services |
| 15 | \`fd9b809\` | chore(knip): delete verified-unused files (phase 1)
|
| 16 | \`a3d7c1b\` | chore(knip): remove unused dependencies (phase 2) |
| 17 | \`0ec48b3\` | feat(license): wire Ed25519 signed-envelope
verification at the storage layer |
| 18 | \`cca7e04\` | refactor(storage-sqlite): extract noteMapping
helpers from SQLiteNoteRepository |
| 19 | \`1a0df95\` | refactor(editor): extract theme + highlight from
MarkdownEditor |
| 20 | \`9034c71\` | chore(license): set real SUBSCRIPTION_PUBLIC_KEY |
| 21 | \`390503c\` | docs(api): document LICENSE_SIGNING_PRIVATE_KEY
secret requirement |

Each is already individually reviewed and merged on GitHub (#266–#284).
They appear here as their original commits because the stack used
rebase-based stacking, not merge commits.

## Pre-merge verification (local, this branch)

- ✅ \`pnpm -r typecheck\` — green across 18 workspace projects
- ✅ \`pnpm test\` — 17/17 packages
- ✅ \`pnpm build\` — 6/6 packages

## After this PR merges

Per the release flow in \`CLAUDE.md\`:

1. Open \`develop → main\` PR
2. Click \"Run workflow\" on Release action — \`semantic-release\`
analyses these conventional commits and bumps the version
3. Tag push triggers Build workflow — mac/win/linux in parallel
4. All builds green → release un-drafts → electron-updater serves the
update

## Notable behaviour changes for users

- **Editor**: no more blank-window crash on notes with tables (#266) —
root cause was \`Decoration.replace\` over multi-line ranges from a
ViewPlugin instead of a StateField
- **AI keys**: no more silent deletion of keys when keychain is
temporarily locked after sleep/wake (#275)
- **Backups**: corrupt restored DB is now refused and rolled back to a
safety copy (#271)
- **Subscriptions**: client now verifies Ed25519 server signatures
(#281, #284); server-side signing rollout still needed for full effect
- **Tooling**: lefthook replaces husky, knip available for dead-code
audits (#267)
- **Infrastructure**: full IPC surface now validated with Zod at the
boundary (#272 + #273 + #274), Playwright scaffold in place (#277)

## Notable for reviewers

- The placeholder \`SUBSCRIPTION_PUBLIC_KEY\` in #281 was replaced with
a real key in #284. The matching private key is set in Cloudflare as
\`LICENSE_SIGNING_PRIVATE_KEY\` (prod + staging). This keypair was
generated in a Claude session and is dev/staging-grade — rotate before
serving real paid customers.
- 50% of audit findings were Knip false positives or already-fixed
(documented per PR). Stack reflects real debt, not the audit verbatim.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Added end-to-end testing for the desktop application with
comprehensive smoke and notes testing.
* Implemented IPC handler validation using Zod schemas for improved type
safety.
* Added subscription envelope signing and verification using Ed25519
cryptography.

* **Bug Fixes**
  * Improved encryption error handling and recovery logic.

* **Tests**
* Established centralized test coverage configuration across all
packages.
* Expanded test suites for markdown commands and licensing
functionality.

* **Chores**
  * Transitioned from Husky to Lefthook for Git hooks management.
  * Refactored internal IPC architecture and service modules.
  * Updated build and deployment configurations.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

## Summary

Promotes `develop` to `main` for **v0.15.0**. Originally opened
2026-04-24; now refreshed with the 19-PR tech-debt audit shipped via
#285 plus the accumulated dependabot bumps reconciled.

`semantic-release` will pick the version bump. Expected: **minor
(v0.14.x → v0.15.0)** because of multiple \`feat:\` commits.

## What ships (audit highlights, from #285)

### Runtime fixes (user-facing)
- **Editor no longer crashes on table-containing notes** (#266) —
\`Decoration.replace\` over multi-line ranges moved from a ViewPlugin to
a StateField, plus an EditorView.exceptionSink so any future plugin
error no longer tears down the EditorView.
- **AI keys survive sleep/wake** (#275) — \`aiKeyStorage\` stopped
silently deleting the encrypted store when the keychain was temporarily
locked after macOS sleep.
- **Backup restore is now safe** (#271) — restored DBs go through
\`PRAGMA integrity_check\` before being swapped in; corrupt backups roll
back to the safety copy.
- **MCP server runs without electron-builder rebuilds** (#264 → #270) —
migrated from native \`better-sqlite3\` to built-in \`node:sqlite\`
(Node 22.5+), updated to the new \`registerTool\` MCP SDK API.

### Security
- **Typed IPC boundary** (#272 + #273 + #274) — 130+ IPC channels now
validated with Zod tuples at the main↔renderer boundary. Garbage in
fails fast with \`IpcValidationError\` instead of corrupting downstream
code.
- **Ed25519 license verification scaffolding** (#276 + #281 + #284) —
\`signSubscriptionPayload\` / \`verifySubscriptionSignature\` helpers
ship in \`@readied/licensing\`, wired into
\`FileLicenseStorage.readSubscriptionData\` with lenient fallthrough
during migration. Real public key embedded (\`d04901…\`). Server-side
\`LICENSE_SIGNING_PRIVATE_KEY\` already set in Cloudflare staging +
production.

### Developer experience
- **Husky → Lefthook** (#267) plus lint-staged that now runs ESLint, not
just Prettier.
- **\`knip\` added** (#267) + 12 unused files deleted (#279) + 6 unused
deps dropped (#280).
- **Playwright Electron E2E scaffold** (#277) with smoke + notes-IPC
specs and a Linux+xvfb CI job (\`continue-on-error: true\` while it
stabilises).
- **Vitest coverage baseline** (#269) — 12 packages share a coverage
config; smoke tests added for \`@readied/commands\`.

### Refactor (no behavior change)
- **Zustand selectors migration** (#268) — 3 components stopped
destructuring entire stores.
- **God-file extractions**:
- \`main/index.ts\` 1065 → 950 lines (#278) — \`FileLicenseStorage\`,
\`windowState\` extracted to services
- \`SQLiteNoteRepository.ts\` 1121 → 1038 lines (#282) — pure helpers
extracted to \`noteMapping.ts\`
- \`MarkdownEditor.tsx\` 737 → 612 lines (#283) — theme +
markdownHighlighting extracted to \`editorTheme.ts\`

## Deploys triggered

| Workflow | Trigger | What happens |
|---|---|---|
| \`deploy-api.yml\` | Auto on \`push\` to main affecting
\`packages/api/**\` | Tests + deploys \`@readied/api\` to Cloudflare
Workers (\`readied-api-production\`). This stack only touched
\`wrangler.toml\` + \`.dev.vars\` docs, no production code change. |
| \`release.yml\` | Manual \`workflow_dispatch\` post-merge |
\`semantic-release\` analyses conventional commits, bumps version,
creates GitHub Release draft + tag |
| \`build.yml\` | Auto on tag push from release.yml | mac / windows /
linux parallel builds, artefacts attached to the GitHub Release |

## Pre-merge verification (local, this branch)

- ✅ \`pnpm -r typecheck\` — green across 18 workspace projects
- ✅ \`pnpm test\` — 17/17 packages
- ✅ Merge resolved: take develop versions for 19 conflicted
package.jsons (develop has equal or newer deps than main's dependabot
bumps)

## Post-merge action items (operator)

1. **Deploy API to staging first** (smoke test):
   \`\`\`
   gh workflow run deploy-api.yml -f environment=staging
   \`\`\`
2. Confirm staging API responds correctly (subscription endpoint with
new \`LICENSE_SIGNING_PRIVATE_KEY\` secret already set in CF).
3. Merge this PR → auto-deploys API to production.
4. Trigger Release workflow: GitHub → Actions → Release → "Run workflow"
→ main.
5. Watch Build workflow for mac/win/linux completion.
6. Confirm the release un-drafts itself.

## Known risks / follow-ups

- **Pre-existing Vercel preview failure for \`apps/web\`** — marketing
site, scheduled to be extracted to its own repo (P3 in the roadmap).
- **\`SUBSCRIPTION_PUBLIC_KEY\` is dev-grade** — generated in a Claude
session. Before the licensing server emits envelopes for real paid
users, rotate the keypair from a trusted machine and ship a follow-up
release.
- **Branch protection should require CodeRabbit completion before
automerge** — added to the roadmap as a process item; this very PR was
BLOCKED correctly because of that policy gap being closed.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>