diff --git a/src/__tests__/path-utils-909.test.ts b/src/__tests__/path-utils-909.test.ts
index 323ad5e4b..80d6224d2 100644
--- a/src/__tests__/path-utils-909.test.ts
+++ b/src/__tests__/path-utils-909.test.ts
@@ -21,4 +21,9 @@ describe('Issue #909: computeProjectHash cross-platform normalization', () => {
   it('returns fallback for empty input', () => {
     expect(computeProjectHash('')).toBe('-');
   });
+
+  it('replaces dots in segments to match Claude Code slug (Issue #3286)', () => {
+    expect(computeProjectHash('/home/me/.claude/repo')).toBe('-home-me--claude-repo');
+    expect(computeProjectHash('/Users/x/Documents/aegis/.claude/worktrees/foo')).toBe('-Users-x-Documents-aegis--claude-worktrees-foo');
+  });
 });
diff --git a/src/monitor.ts b/src/monitor.ts
index 7a0bb892f..84ac8f26e 100644
--- a/src/monitor.ts
+++ b/src/monitor.ts
@@ -627,8 +627,11 @@ export class SessionMonitor {
     const result = await this.sessions.readMessagesForMonitor(session.id);
     const prevStatus = this.lastStatus.get(session.id);
 
-    // Forward messages only when watcher is NOT active (fallback polling path)
-    if (!this.jsonlWatcher && result.messages.length > 0) {
+    // Forward messages only when watcher is NOT active for THIS session (#3286).
+    // Checking the watcher instance alone misses the discovery poll where the
+    // fallback just set jsonlPath but the watcher hasn't started yet — entries
+    // read here would otherwise be dropped before the watcher subscribes.
+    if (!this.jsonlWatcher?.isWatching(session.id) && result.messages.length > 0) {
       this.rateLimitedSessions.delete(session.id);
       for (const msg of result.messages) {
         await this.forwardMessage(session, msg);
diff --git a/src/path-utils.ts b/src/path-utils.ts
index 8cf2a4853..2d36515e7 100644
--- a/src/path-utils.ts
+++ b/src/path-utils.ts
@@ -15,7 +15,7 @@ export function computeProjectHash(workDir: string): string {
   const segments = withLowerDrive
     .split('/')
     .filter(Boolean)
-    .map((segment) => segment.replace(/:/g, '').replace(/\s+/g, '-'));
+    .map((segment) => segment.replace(/:/g, '').replace(/\s+/g, '-').replace(/\./g, '-'));
 
   if (segments.length === 0) return '-';
   return `-${segments.join('-')}`;