feat: redesign coding default entry

.project-docs/30-worklog/tasks/20260906-coding-default-page-a7c42e.md

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+# Task: Redesign Coding default page
+
+## Identity
+
+- Task ID: 20260906-coding-default-page-a7c42e
+- Mode: Feature
+- Branch: codex/20260906-coding-default-page-a7c42e-coding-default-page
+- Worktree: /Users/inmanx/Documents/makelore-task-coding-default-page-a7c42e
+- Base commit: f8eee430f4f4167dc2ecc682ece96c652cdde14b
+- Owner: codex
+- Status: Ready for Integration
+
+## Scope
+
+- Replace the no-project Code entry redirect with a dedicated conversation-first
+  landing state on `/chat`.
+- Restyle both the no-project landing and the empty Conversation timeline around
+  the existing Makelore M brand mark, a large centered prompt, and the existing
+  bottom-composer hierarchy shown in the supplied Codex reference.
+- Keep project creation reachable from the landing surface and update focused
+  Renderer/Electron coverage plus README current-state wording.
+
+## Intent And Constraints
+
+- Reuse `src/assets/logo.svg`; do not copy or approximate the Codex mark and do
+  not generate a new brand asset.
+- Preserve the single Makelore light visual system, bundled typography, Chinese
+  UI, project-local `.makelore` authority, and all Main-owned runtime/API seams.
+- The no-project call to action must open the existing Sidebar project-creation
+  flow rather than introducing a second creation implementation.
+- Existing projects, Agent selection, Conversation creation, Composer behavior,
+  model/runtime controls, and accepted/uncertain mutation semantics remain
+  unchanged.
+- Completed peer tasks for Plugin rehoming and removal of the project setup gate
+  overlap in Code-entry files but have no committed branch tips to consume. This
+  task therefore stays isolated on the recorded base and keeps its changes small
+  enough for later semantic integration.
+
+## Outcome
+
+- Code now resolves an empty local project list to `/chat` instead of redirecting
+  to Project Configuration.
+- The no-project view uses the existing Makelore M vector asset, a large centered
+  guide sentence, and a low, wide project starter modeled on the supplied Codex
+  composition while retaining the Makelore sidebar and light visual system.
+- Every project-starter action reuses the Sidebar's existing project-creation
+  dialog through a renderer-local event bridge; the secondary action opens the
+  existing project/settings route.
+- Empty Conversations reuse the same branded hero above the real editable
+  Composer and automatically yield to the normal timeline after the first entry.
+- README current-state wording, focused unit coverage, and the Code-entry Electron
+  navigation regression were updated. A side-by-side visual QA pass is recorded
+  in project-root `design-qa.md` with `final result: passed`.
+
+## Verification
+
+- `corepack pnpm install --frozen-lockfile` — passed with pinned pnpm `10.33.4`.
+- `corepack pnpm run typecheck` — passed.
+- `corepack pnpm exec vitest run tests/unit/coding-chat-panel.test.tsx tests/unit/coding-conversation-timeline.test.tsx tests/unit/module-navigation.test.tsx tests/unit/app-module-provider-gate.test.tsx --maxWorkers=4`
+  — 4 files, 58 tests passed.
+- `corepack pnpm test` — 222 files passed; 1,861 tests passed and 3 skipped.
+- `corepack pnpm run lint:check` — passed with 0 errors and the repository's 5
+  pre-existing warnings in `src/pages/Home/index.tsx` and
+  `src/pages/Makelore/index.tsx`.
+- `corepack pnpm run build:vite` — Renderer, Electron Main, Preload, and utility
+  worker production builds passed; only existing Browserslist, mixed-import, and
+  chunk-size warnings were emitted.
+- `corepack pnpm exec playwright test tests/e2e/main-navigation.spec.ts --grep
+  "returns to the module chooser"` — passed against the built Electron app,
+  including `/chat`, branded hero, starter visibility, and project-dialog launch.
+- `git diff --check` — passed.
+- Visual comparison:
+  `/Users/inmanx/.codex/visualizations/2026/09/06/01a0756a-b6f5-7892-a11c-1c1608ebe592/codex-reference-vs-makelore.png`
+  — no actionable P0/P1/P2 differences.
+
+## Follow-ups
+
+- During integration, semantically reconcile `App.tsx`, `Sidebar.tsx`, and the
+  Code-entry tests with the concurrently completed but uncommitted Plugin-rehoming
+  and project-gate-removal tasks; their branch tips contain no commits to merge or
+  cherry-pick from this feature worktree.
+- Recheck the starter's `项目与插件设置` label after those peer changes establish
+  their final settings terminology.
+
+## Promotion Candidates
+
+- Target: `.project-docs/30-worklog/current-state.md` and
+  `.project-docs/40-domain/business-rules.md`.
+  Proposal: record that entering Code with no active local project remains on
+  `/chat`, presents the branded project starter, and routes all creation actions
+  through the single existing Sidebar flow; empty Conversations share the same
+  brand hero until their first entry.
+  Evidence: focused unit coverage, the passing Electron navigation regression,
+  production build, and the passed side-by-side visual QA.
+  Future impact: future routing or setup work must not restore the configuration
+  redirect or a second project-creation implementation.
+  Human confirmation: not required for intent because the user explicitly
+  requested this entry behavior; integration still must reconcile the overlapping
+  peer tasks semantically.