Enforce path-scoped fs grants for mount tokens (#255)

* fix(httpapi): enforce path-scoped fs grants

* chore: apply pr-reviewer fixes for #255

* fix(httpapi): enforce path-scoped fs grants

* chore: apply pr-reviewer fixes for #255

---------

Co-authored-by: kjgbot <kjgbot@agentrelay.dev>
Co-authored-by: agent-relay-code[bot] <agent-relay-code[bot]@users.noreply.github.com>

Author: 3 people

.trajectories/active/traj_y5jru5dh9ku6/trajectory.json

@@ -6,8 +6,95 @@
   },
   "status": "active",
   "startedAt": "2026-06-06T00:15:50.055Z",
-  "agents": [],
-  "chapters": [],
+  "agents": [
+    {
+      "name": "default",
+      "role": "lead",
+      "joinedAt": "2026-06-07T15:55:00.093Z"
+    }
+  ],
+  "chapters": [
+    {
+      "id": "chap_krw4gjdmzw08",
+      "title": "Work",
+      "agentName": "default",
+      "startedAt": "2026-06-07T15:55:00.093Z",
+      "events": [
+        {
+          "ts": 1780847700094,
+          "type": "decision",
+          "content": "Validated PR bot comments before editing: Validated PR bot comments before editing",
+          "raw": {
+            "question": "Validated PR bot comments before editing",
+            "chosen": "Validated PR bot comments before editing",
+            "alternatives": [],
+            "reasoning": "Fetched PR #255 discussion via GitHub connector; available bot comments had no actionable findings against current checkout."
+          },
+          "significance": "high"
+        },
+        {
+          "ts": 1780847812604,
+          "type": "reflection",
+          "content": "PR #255 review found no actionable bot findings; focused auth package tests pass after installing Go.",
+          "raw": {
+            "confidence": 0.82
+          },
+          "significance": "high",
+          "tags": [
+            "confidence:0.82"
+          ]
+        },
+        {
+          "ts": 1780848138859,
+          "type": "decision",
+          "content": "Fixed narrowed grant empty-path match: Fixed narrowed grant empty-path match",
+          "raw": {
+            "question": "Fixed narrowed grant empty-path match",
+            "chosen": "Fixed narrowed grant empty-path match",
+            "alternatives": [],
+            "reasoning": "Current scopeMatchesPath returned true for any applicable narrowed scope when filePath was empty; only wildcard path scopes should bypass path matching."
+          },
+          "significance": "high"
+        },
+        {
+          "ts": 1780848308628,
+          "type": "decision",
+          "content": "Extended path-scoped fs enforcement to tree/events/websocket: Extended path-scoped fs enforcement to tree/events/websocket",
+          "raw": {
+            "question": "Extended path-scoped fs enforcement to tree/events/websocket",
+            "chosen": "Extended path-scoped fs enforcement to tree/events/websocket",
+            "alternatives": [],
+            "reasoning": "Tracing fs:read callers showed tree and websocket already accept path filters but authorized with an empty required path, and events has no path filter; narrowed mount grants should not authorize whole-workspace reads."
+          },
+          "significance": "high"
+        },
+        {
+          "ts": 1780848332832,
+          "type": "reflection",
+          "content": "Validated bot finding and caller trace; first websocket test run exposed a no-path slice guard issue now fixed.",
+          "raw": {
+            "confidence": 0.78
+          },
+          "significance": "high",
+          "tags": [
+            "confidence:0.78"
+          ]
+        },
+        {
+          "ts": 1780848567249,
+          "type": "reflection",
+          "content": "PR #255 review addressed CodeRabbit's empty-path finding, added fs:write coverage, and closed related path-scoped fs read gaps for tree, events, and websocket subscriptions. Verified with internal/httpapi tests, full Go tests, Go builds, go vet, and contract surface check.",
+          "raw": {
+            "confidence": 0.86
+          },
+          "significance": "high",
+          "tags": [
+            "confidence:0.86"
+          ]
+        }
+      ]
+    }
+  ],
   "commits": [],
   "filesChanged": [],
   "projectId": "/home/daytona/workspace",