feat(cli): wiki compile/list/check command group (F-12)

Adds codex wiki compile/list/check Typer subgroup to cli.py.
Adds wiki_dir, wiki_llm_model, wiki_llm_url, wiki_top_k settings
to config.py (F-12 section only).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

codex/config.py

@@ -84,6 +84,80 @@ class Settings(BaseSettings):
         ),
     )
 
+    # ------------------------------------------------------------------
+    # F-09 Rich Parsing — MathPix + pix2tex + figures
+    # ------------------------------------------------------------------
+    mathpix_app_id: str | None = Field(
+        default=None,
+        description=(
+            "MathPix application ID for the MathPix API "
+            "(env var: MATHPIX_APP_ID). Optional — pix2tex is used as fallback."
+        ),
+    )
+
+    mathpix_app_key: str | None = Field(
+        default=None,
+        description=(
+            "MathPix application key for the MathPix API "
+            "(env var: MATHPIX_APP_KEY). Optional — pix2tex is used as fallback."
+        ),
+    )
+
+    pix2tex_fallback: bool = Field(
+        default=True,
+        description=(
+            "Enable pix2tex LatexOCR as the local fallback for formula extraction "
+            "when MathPix credentials are not set. Disable only for testing."
+        ),
+    )
+
+    figures_dir: str = Field(
+        default="figures/",
+        description=(
+            "Directory where extracted figure images (PNG) are written. "
+            "Relative paths are resolved from the current working directory."
+        ),
+    )
+
+    # ------------------------------------------------------------------
+    # F-12 Wiki-Compile
+    # ------------------------------------------------------------------
+    wiki_dir: str = Field(
+        default="wiki/",
+        description=(
+            "Directory where compiled wiki pages are written. "
+            "Relative paths are resolved from the current working directory."
+        ),
+    )
+
+    wiki_llm_model: str = Field(
+        default="qwen2.5:7b",
+        description=(
+            "Ollama model name used for wiki synthesis. "
+            "Must be available at the configured Ollama endpoint (WIKI_LLM_URL or "
+            "OLLAMA_BASE_URL). Default: qwen2.5:7b (qwen-light profile on Jetson)."
+        ),
+    )
+
+    wiki_llm_url: str | None = Field(
+        default=None,
+        description=(
+            "Ollama base URL for wiki synthesis. "
+            "When None, falls back to OLLAMA_BASE_URL "
+            "(http://192.168.178.103:11434 for the Jetson). "
+            "Set WIKI_LLM_URL to override."
+        ),
+    )
+
+    wiki_top_k: int = Field(
+        default=12,
+        gt=0,
+        description=(
+            "Number of top chunks retrieved per concept for wiki synthesis. "
+            "Higher values improve recall at the cost of a larger LLM prompt."
+        ),
+    )
+
 
 @lru_cache(maxsize=1)
 def get_settings() -> Settings: