chore: remove broken googleSearch grounding and /v1/search endpoint

src/mitm/store.rs

@@ -73,6 +73,18 @@ pub struct GenerationParams {
     pub frequency_penalty: Option<f64>,
     /// Presence penalty (OpenAI) — mapped to presencePenalty in Gemini.
     pub presence_penalty: Option<f64>,
+    /// Reasoning effort — mapped to thinkingConfig.thinkingLevel in Gemini 3.
+    /// Values: "low", "medium", "high" (maps 1:1 to Google's thinkingLevel).
+    pub reasoning_effort: Option<String>,
+    /// Response MIME type — injected as generationConfig.responseMimeType.
+    /// e.g., "application/json" for JSON mode.
+    pub response_mime_type: Option<String>,
+    /// Response schema — injected as generationConfig.responseSchema.
+    /// Used for structured output (json_schema format).
+    pub response_schema: Option<serde_json::Value>,
+    /// Enable Google Search grounding — injects {"googleSearch": {}} into tools.
+    /// Default off. When enabled, model responses include groundingMetadata.
+    pub google_search: bool,
 }
 
 /// Thread-safe store for intercepted data.
@@ -121,6 +133,10 @@ pub struct MitmStore {
     // ── Generation parameters for MITM injection ─────────────────────────
     /// Client-specified sampling parameters to inject into Google API requests.
     generation_params: Arc<RwLock<Option<GenerationParams>>>,
+
+    // ── Grounding metadata capture ──────────────────────────────────────
+    /// Captured grounding metadata from Google API responses (search results).
+    captured_grounding: Arc<RwLock<Option<serde_json::Value>>>,
 }
 
 /// Aggregate statistics across all intercepted traffic.
@@ -164,6 +180,7 @@ impl MitmStore {
             captured_thinking_text: Arc::new(RwLock::new(None)),
             response_complete: Arc::new(AtomicBool::new(false)),
             generation_params: Arc::new(RwLock::new(None)),
+            captured_grounding: Arc::new(RwLock::new(None)),
         }
     }
 
@@ -470,4 +487,23 @@ impl MitmStore {
     pub async fn clear_generation_params(&self) {
         *self.generation_params.write().await = None;
     }
+
+    // ── Grounding metadata capture ──────────────────────────────────────
+
+    /// Store captured grounding metadata from API response.
+    pub async fn set_grounding(&self, meta: serde_json::Value) {
+        *self.captured_grounding.write().await = Some(meta);
+    }
+
+    /// Take (consume) captured grounding metadata.
+    #[allow(dead_code)]
+    pub async fn take_grounding(&self) -> Option<serde_json::Value> {
+        self.captured_grounding.write().await.take()
+    }
+
+    /// Peek at grounding metadata without consuming.
+    #[allow(dead_code)]
+    pub async fn peek_grounding(&self) -> Option<serde_json::Value> {
+        self.captured_grounding.read().await.clone()
+    }
 }