feat: add project-review workflow (whole-project / single-feature review)

Adds the project-review workflow for code review independent of the git
diff. The scope is parsed from the user instruction: 全面/整个项目 ->
whole-project (score every source file), otherwise feature + target
keyword (locate the code with semantic search + graph queries).

- scoring_tools.py: score_review_func gains all_files=True to score every
  source file in the graph via store.get_all_files()
- main.py: score_review_tool gains all_files param; registers the
  project_review MCP prompt (prompts 6->7)
- prompts.py: project_review_prompt(scope, target) with whole-project and
  feature branches (fixed a precedence bug that truncated the feature text)
- skills.py + skills/project-review/: new read-only project-review skill
  with shared checklists
- .opencode/command/code-review-graph-project-review.md: slash command
- tests: test_project_review.py (prompt rendering), TestProjectReviewPrompt,
  skill count assertions 5->6, all_files wiring checks
- docs: prompts (6->7) + project-review entries across COMMANDS, CLAUDE,
  README (+localized), INDEX, architecture, LLM-OPTIMIZED-REFERENCE,
  CHANGELOG

docs/COMMANDS.md

@@ -28,6 +28,13 @@ Three-layer unified code review (CRG graph context + ai-code-review scoring + gs
 - Fingerprint merge + quality score via `dedupe_findings_tool`
 - Standalone HTML report via `generate_report_tool`
 
+### `/code-review-graph:project-review`
+Whole-project or single-feature code review (not diff-based).
+- Scope parsed from user instruction: 全面/整个项目 → whole-project; otherwise feature + target
+- Whole-project: `score_review_tool(all_files=True)` scores every source file
+- Feature: `semantic_search_nodes` + `query_graph(children_of)` locate the code
+- Read-only: every finding waits for a manual fix decision
+
 ## MCP Tools
 
 ### Core Tools
@@ -259,11 +266,14 @@ findings to the appendix, and computes `PR quality score = max(0, 10 -
 #### `generate_report_tool`
 ```
 review_data: dict                 # metrics + findings + verdict + tier + scope
-output_path: str | None           # Default: <repo_root>/code-review-report.html
-repo_root: str | None
+output_path: str | None           # Base name without extension
+repo_root: str | None             # Default: <repo_root>/code-review-report
+format: str = "both"              # "html" | "markdown" | "both"
 ```
-Renders the standalone HTML code review report (self-contained, no external
-dependencies) from the bundled `report-template.html`.
+Renders the standalone HTML review report (self-contained, no external
+dependencies) and/or the Chinese Markdown report from the bundled
+`report-template.html`.  Default `format="both"` writes
+`code-review-report.html` + `code-review-report.md`.
 
 #### `refactor_tool`
 ```
@@ -310,7 +320,7 @@ kind: str | None
 limit: int = 20
 ```
 
-## MCP Prompts (6 workflow templates)
+## MCP Prompts (7 workflow templates)
 
 ### `review_changes`
 Pre-commit review workflow using detect_changes, affected_flows, and test gaps.
@@ -346,6 +356,17 @@ base: str = "HEAD~1"
 tier: str = "standard"   # fast | standard | strict
 ```
 
+### `project_review`
+Whole-project or single-feature code review (not diff-based). Reviews
+the entire codebase or a single feature/module using graph-wide analysis
+and objective scoring. READ-ONLY: every finding waits for a manual fix
+decision. Scope is parsed from the user instruction (全面/整个项目 →
+whole-project; otherwise feature + target keyword).
+```
+scope: str = "whole-project"   # whole-project | feature
+target: str = ""               # feature/module keyword when scope="feature"
+```
+
 ## CLI Commands
 
 ```bash