feat(tools): add minio ingestion into memory namespaces

docs/api/TOOLS.md

@@ -27,6 +27,7 @@ Tools are executable capabilities that the AI agent can call to perform actions
 - **Web**: `web.fetch`, `web.search`
 - **Browser**: `browser.navigate`, `browser.screenshot`
 - **Memory**: `memory.read`, `memory.write`, `memory.search`
+- **MinIO**: `minio.share`, `minio.ingest`
 - **Media**: `media.send`, `image.analyze`, `audio.transcribe`
 - **System**: `system.info`
 - **Session**: `sessions.list`, `sessions.delete`
@@ -466,7 +467,7 @@ Tools are organized into groups:
 - `group:web`: Web and browser tools
 - `group:memory`: Memory and search tools
 
-There are additional groups for specific integrations (gmail/gcal/gdocs/gdrive/gtasks/cron). See `TOOL_GROUPS` in `src/tools/policy.ts`.
+There are additional groups for specific integrations (gmail/gcal/gdocs/gdrive/gtasks/cron/minio). See `TOOL_GROUPS` in `src/tools/policy.ts`.
 
 ### Policy Resolution
 
@@ -958,6 +959,54 @@ Search memory using hybrid (keyword + vector) search.
 }
 ```
 
+### MinIO Tools
+
+#### `minio.share`
+
+Upload a local file to MinIO and return a temporary presigned download URL.
+
+#### `minio.ingest`
+
+Read a text-like object from MinIO and write it into a memory namespace.
+
+```json
+{
+  "name": "minio.ingest",
+  "description": "Read a text-like object from MinIO and ingest it into memory namespace for later retrieval/search.",
+  "inputSchema": {
+    "type": "object",
+    "properties": {
+      "object_key": {
+        "type": "string",
+        "description": "Object key in MinIO bucket"
+      },
+      "bucket": {
+        "type": "string",
+        "description": "Optional bucket override"
+      },
+      "namespace": {
+        "type": "string",
+        "description": "Memory namespace (default: global/knowledge)"
+      },
+      "mode": {
+        "type": "string",
+        "enum": ["append", "replace"],
+        "description": "Write mode"
+      },
+      "max_chars": {
+        "type": "number",
+        "description": "Maximum characters to ingest"
+      },
+      "force": {
+        "type": "boolean",
+        "description": "Override non-text extension/content safety checks"
+      }
+    },
+    "required": ["object_key"]
+  }
+}
+```
+
 ### Media Tools
 
 #### `media.send`