fix(project-context): correct parent transcript path resolution

Agent transcripts are at .../project/{sessionId}/subagents/agent-{agentId}.jsonl
Parent transcripts are at .../project/{sessionId}.jsonl

The previous code incorrectly computed the parent path by only going up one
directory level. This fix properly navigates from the subagents/ directory
to the project root to find the parent transcript.

Integrates fix from PR #320.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: sylvansys

plugins/project-context/shared/hooks/utils/task-state.ts

@@ -336,7 +336,13 @@ export async function getTaskEdits(
   }
 
   // Find parent session transcript
-  const dir = path.dirname(agentTranscriptPath);
+  // Agent transcripts are at: .../project/{sessionId}/subagents/agent-{agentId}.jsonl
+  // Parent transcripts are at: .../project/{sessionId}.jsonl
+  let dir = path.dirname(agentTranscriptPath); // .../sessionId/subagents/
+  if (path.basename(dir) === 'subagents') {
+    dir = path.dirname(dir); // .../sessionId/
+  }
+  dir = path.dirname(dir); // .../project/
   const parentPath = path.join(dir, `${sessionId}.jsonl`);
 
   try {