fix: simplify coding project card rail

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

@@ -22,6 +22,8 @@
 - Apply the user's follow-up correction: the lower landing surface is a standalone
   `新增项目` CTA followed by horizontally arranged existing-project cards, not a
   composer-shaped project starter.
+- Apply the user's final copy correction: remove the visible `已有项目` heading and
+  `选择一个项目继续` helper while retaining the horizontal project-card rail.
 
 ## Intent And Constraints
 
@@ -47,7 +49,8 @@
 - The no-project view uses the existing Makelore M vector asset and a large
   centered guide sentence while retaining the Makelore sidebar and light visual
   system. Its lower surface now uses the user's clarified standalone orange
-  `新增项目` CTA followed by an overflow-safe horizontal row of existing projects.
+  `新增项目` CTA followed directly by an overflow-safe horizontal row of existing
+  projects, without the redundant visible project-section heading or helper copy.
 - Project creation reuses the Sidebar's existing dialog through a renderer-local
   event bridge; project-card selection uses the same bridge to invoke the
   Sidebar's validated entry flow instead of duplicating project activation.
@@ -69,6 +72,12 @@
 - Follow-up focused run:
   `corepack pnpm exec vitest run tests/unit/coding-chat-panel.test.tsx tests/unit/coding-project-entry.test.ts tests/unit/module-navigation.test.tsx tests/unit/app-module-provider-gate.test.tsx --maxWorkers=4`
   — 4 files, 48 tests passed.
+- Final-copy focused run:
+  `corepack pnpm exec vitest run tests/unit/coding-chat-panel.test.tsx tests/unit/coding-project-entry.test.ts --maxWorkers=2`
+  — 2 files, 23 tests passed, including assertions that `已有项目` and
+  `选择一个项目继续` stay absent while real cards remain.
+- `corepack pnpm exec eslint src/pages/Chat/CodingChatPanel.tsx tests/unit/coding-chat-panel.test.tsx tests/e2e/main-navigation.spec.ts`
+  — passed with no output.
 - `corepack pnpm test` — 223 files passed; 1,863 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
@@ -79,14 +88,15 @@
 - `corepack pnpm exec playwright test tests/e2e/main-navigation.spec.ts --grep
   "offers a create CTA|returns to the module chooser"` — 2 tests passed against
   the built Electron app, covering empty and remembered-project entry states,
-  horizontal card order, direct card entry, `/chat`, and project-dialog launch.
+  absent section/helper copy, horizontal card order, direct card entry, `/chat`,
+  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-v2.png`
+  `/Users/inmanx/.codex/visualizations/2026/09/06/01a0756a-b6f5-7892-a11c-1c1608ebe592/codex-reference-vs-makelore-v3.png`
   plus the focused lower crop
-  `/Users/inmanx/.codex/visualizations/2026/09/06/01a0756a-b6f5-7892-a11c-1c1608ebe592/codex-reference-vs-makelore-v2-bottom.png`
-  — the user-identified composer/CTA mismatch is resolved and no actionable
-  P0/P1/P2 differences remain.
+  `/Users/inmanx/.codex/visualizations/2026/09/06/01a0756a-b6f5-7892-a11c-1c1608ebe592/codex-reference-vs-makelore-v3-bottom.png`
+  — the user-identified composer/CTA and redundant-copy mismatches are resolved,
+  and no actionable P0/P1/P2 differences remain.
 
 ## Follow-ups
 
@@ -101,9 +111,9 @@
   `.project-docs/40-domain/business-rules.md`.
   Proposal: record that entering Code with no active local project remains on
   `/chat`, presents the branded hero, a standalone `新增项目` CTA, and real local
-  projects as a horizontal card row. Creation and project-card entry route through
-  the single existing Sidebar flows; empty Conversations share the same brand
-  hero until their first entry.
+  projects as an unlabeled horizontal card row. Creation and project-card entry
+  route through the single existing Sidebar flows; 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