docs: fix command name inconsistencies across documentation

Fix multiple command naming and parameter inconsistencies:

1. Command Name Fixes:
   - Change /cli:mode:bug-index to /cli:mode:bug-diagnosis
   - Affected files: COMMAND_REFERENCE.md, COMMAND_SPEC.md,
     EXAMPLES.md, GETTING_STARTED.md, GETTING_STARTED_CN.md,
     PROJECT_INTRODUCTION.md

2. Parameter Fixes:
   - Remove invalid --tool parameter from /workflow:lite-plan
   - The lite-plan command does not support --tool flag
   - Affected files: README.md, README_CN.md, COMMAND_SPEC.md

3. Invalid Command Fixes in PROJECT_INTRODUCTION.md:
   - Change /gemini:analyze to /cli:analyze --tool gemini
   - Change /qwen:mode:plan to /cli:mode:plan --tool qwen
   - Change /codex:mode:auto to /cli:execute --tool codex
   - Change /workflow:plan-deep to /workflow:plan
   - These legacy command formats are no longer valid

Impact:
- All documentation now matches actual command implementations
- Users will not encounter "command not found" errors
- Examples are now executable and correct
- Consistent command syntax across all docs

Files modified: 8
- COMMAND_REFERENCE.md
- COMMAND_SPEC.md
- EXAMPLES.md
- GETTING_STARTED.md
- GETTING_STARTED_CN.md
- PROJECT_INTRODUCTION.md
- README.md
- README_CN.md

COMMAND_SPEC.md

@@ -79,8 +79,8 @@ High-level orchestrators for complex, multi-phase development processes.
   # Force code exploration
   /workflow:lite-plan -e "Refactor logging module for better performance"
 
-  # Preset CLI tool
-  /workflow:lite-plan --tool codex "Add unit tests for auth service"
+  # Basic usage
+  /workflow:lite-plan "Add unit tests for auth service"
   ```
 
 ### **/workflow:execute**
@@ -247,13 +247,13 @@ Direct access to AI tools for analysis and code interaction without a full workf
   /cli:execute "implement JWT authentication with middleware"
   ```
 
-### **/cli:mode:bug-index**
-- **Syntax**: `/cli:mode:bug-index [--agent] [--tool ...] [--enhance] [--cd path] <bug description>`
+### **/cli:mode:bug-diagnosis**
+- **Syntax**: `/cli:mode:bug-diagnosis [--tool ...] [--enhance] [--cd path] <bug description>`
 - **Responsibilities**: Performs systematic bug analysis using the `bug-fix.md` template. Read-only.
-- **Agent Calls**: `@cli-execution-agent` (if `--agent` is used).
+- **Agent Calls**: `@cli-execution-agent` (default).
 - **Example**:
   ```bash
-  /cli:mode:bug-index "null pointer error in login flow"
+  /cli:mode:bug-diagnosis "null pointer error in login flow"
   ```
 
 ### **/cli:mode:code-analysis**