Task: ML-02 Identity user experience and E2E

Identity

Extend the Renderer coding-project facade and store with the accepted ML-01 identity request/result projections.
Make the new-project dialog default to a generated identity and offer an explicit canonical bind-existing choice with same-account sharing guidance.
Add the one-time legacy identity resolution card and the explicit independent-copy action to Project Configuration, including fixed UX copy about files/cloud data and safe error/cancel states.
Add focused Renderer tests and Electron E2E coverage for create, bind, invalid/cancel, legacy, and independent-copy flows.

Keep project identity creation, validation authority, persistence, cloud access, and preview/session invalidation in Main; Renderer only sends the accepted create/bind union or literal confirmation and projects safe config snapshots.
Preserve the canonical lowercase hyphenated UUID contract and ordinary-save immutability. A same-account bind shares development data; an independent copy rewrites only this folder's ID, does not move/copy files or cloud data, and gets its new UUID from Main.
Limit changes to the task ownership set: src/components/layout/Sidebar.tsx, src/pages/ProjectConfiguration/index.tsx, src/lib/coding-projects.ts, the necessary identity state projection in src/stores/coding-workspace.ts / src/stores/project-config.ts, focused Renderer tests, Electron E2E, and this task record. Do not modify ML-03 Main seams or add Renderer provisioning/cloud/session logic.
Use the repository-pinned pnpm 10.33.4; run focused tests first, then typecheck/lint and relevant Electron E2E/build checks. Record unavailable platform/service prerequisites rather than claiming unrun acceptance.

Implemented the ML-02 Renderer identity UX and focused coverage.
src/lib/coding-projects.ts now projects the required create/bind identity union, validates the canonical lowercase UUID shape for UI preflight, and exposes the identity-resolution and independent-copy Host operations.
The new-project dialog defaults to generated identity, makes bind-existing explicit, explains same-account sharing, and reports invalid input before a Host call. Project Configuration now shows the one-time legacy resolution card and a confirmed independent-copy action whose copy states that files stay in place and cloud data is not copied.
No Main files, cloud/session logic, or Renderer data provisioning were added.

pnpm --version -> 10.33.4.
pnpm exec vitest run tests/unit/coding-projects-facade.test.ts tests/unit/project-config-store.test.ts tests/unit/coding-workspace-store.test.ts --maxWorkers=1 -> 3 files, 10 tests passed.
pnpm typecheck -> passed.
pnpm lint:check -> 0 errors; 5 pre-existing warnings in src/pages/Home/index.tsx and src/pages/Makelore/index.tsx.
pnpm build:vite -> passed.
pnpm test -> 183 files, 1554 tests passed, 2 skipped.
pnpm test:electron:windows -> 2 files, 4 tests passed.
pnpm exec playwright test tests/e2e/coding-project-identity.spec.ts --config=playwright.config.ts -> 2 tests passed.
pnpm exec playwright test tests/e2e/project-configuration-skills.spec.ts --config=playwright.config.ts -> 1 test passed.
pnpm test:e2e -> 25 tests passed, 1 unrelated existing PI E2E failed at tests/e2e/pi-coding-first-chat.spec.ts:575: the model combobox remained disabled while selecting model-b; a direct rerun reproduced the same failure. The identity and Project Configuration specs passed in this run.

Investigate the pre-existing/flaky PI model-combobox E2E separately; it is outside the ML-02 ownership set and was not changed here.

Identity UX, facade projections, and E2E coverage are ready for integration after this task commit. The full E2E suite's unrelated PI failure should remain visible to the integrator.