fix: validate sessions in cmd_status + use isolated test environment

1. cmd_status now validates session IDs against opencode session list
   - Reports 'error: base session X not found in opencode' if missing
   - Reports 'error: pm_agent session X not found in opencode' if missing

2. Test suite now uses isolated KUGETSU_DIR=/tmp/test-kugetsu-$$
   - All tests use separate test directory instead of ~/.kugetsu
   - Prevents test suite from corrupting real user data
   - Cleanup removes test directory entirely

Fixes #148

.github/ISSUES/fix-queue-daemon-excess-agents.md

@@ -0,0 +1,67 @@
+# Fix: Queue daemon spawning excess agents due to race condition
+
+## Problem
+
+When enqueueing multiple tasks (e.g., 6 tasks), the queue daemon was spawning many more subagents than expected, eventually exhausting container memory.
+
+**Root Cause:** The combination of:
+1. `process_queue()` calling `opencode run` directly instead of `kugetsu start`, bypassing all concurrency logic
+2. `count_active_dev_sessions()` counting `pm-agent.json` toward `MAX_CONCURRENT_AGENTS`, reducing effective dev agent slots
+3. No atomic locking around session count check + session file creation (TOCTOU race condition)
+4. Background spawning of multiple concurrent processes in `process_queue()`
+
+**Expected behavior:** With `MAX_CONCURRENT_AGENTS=3` and 6 tasks:
+- Tasks should be processed sequentially via `kugetsu start`
+- Only 3 dev agents should run at a time
+- Tasks should queue and wait for slots to free up
+
+## Solution
+
+### 1. `count_active_dev_sessions()` - Exclude pm-agent
+Only count actual dev agent session files (exclude `pm-agent.json`).
+
+### 2. `process_queue()` - Call `kugetsu start` directly + retry logic
+- Call `kugetsu start` directly (foreground, sequential) instead of spawning `opencode run` background process
+- Dynamic batch size = available slots (removes need for `QUEUE_DAEMON_BATCH_SIZE`)
+- Retry logic (max 3 attempts) on failure
+- On failure: cleanup worktree/session and revert to `pending` state
+- Save `fork_pid` to queue item for timeout handling
+
+### 3. `cmd_start()` - Add flock
+- Add flock around critical section (count check + fork)
+- Track `fork_pid` for queue item timeout handling
+
+### 4. Notification System
+New notification types:
+| Event | Type |
+|-------|------|
+| Task enqueued | `task_queued` |
+| Task dequeued | `task_dequeued` |
+| Task started | `task_started` |
+| Task completed | `task_completed` |
+| Task error | `task_error` |
+
+### 5. Config
+- Remove `QUEUE_DAEMON_BATCH_SIZE` (no longer needed - batch size is now dynamic)
+
+## Notification Flow
+
+| Event | Location | Type |
+|-------|----------|------|
+| Task enqueued | `enqueue_task()` | `task_queued` |
+| Task dequeued | `process_queue()` after state change to `notified` | `task_dequeued` |
+| Task started | `cmd_start()` after session file created | `task_started` |
+| Task completed | `update_queue_item_state()` | `task_completed` |
+| Task error | `update_queue_item_state()` | `task_error` |
+
+## Out of Scope
+
+- Re-check loop in cmd_start (checking if session DB is reliable) - deferred to separate research issue
+- Buffer mechanism for excess forking (safety failsafe only)
+
+## Status
+
+- [x] Issue created
+- [x] Implementation
+- [x] PR created (#147)
+- [ ] Merged

CONTRIBUTING.md

@@ -2,10 +2,10 @@
 
 ## Workflow
 
-1. Create a branch for your work: `git checkout -b fix/issue-N-name` or `git checkout -b docs/topic-name`
+1. Create a branch for your work: `git checkout -b fix/issue-N-name` or `git checkout -b feat/issue-N-feature-name`
 2. Make changes and commit with clear messages
 3. Open a Pull Request for review
-4. Do not merge directly to `master` for reviewable changes
+4. Do not merge directly to `main` for reviewable changes
 5. After approval, squash and merge
 
 ## Guidelines
@@ -17,7 +17,10 @@
 
 ## Branches
 
-- `master` — stable, reviewed content only
+- `main` — stable, reviewed content only
+- `develop` — experimental work for 0.2.x
 - `fix/*` — bug fixes
+- `feat/*` — new features
 - `docs/*` — documentation updates
+- `refactor/*` — refactoring
 - `research/*` — new research notes

skills/kugetsu/SKILL.md

@@ -49,6 +49,8 @@ A default config file is created during `kugetsu init` with commented examples:
 | `MAX_CONCURRENT_AGENTS` | 3 | Maximum number of concurrent dev agents |
 | `KUGETSU_TEMP_DIR` | `~/.local/share/opencode/tool-output` | Temp directory for subagent tool output (useful in headless environments where /tmp is restricted) |
 | `KUGETSU_VERBOSITY` | `default` | PM agent verbosity level: `verbose`, `default`, or `quiet` |
+| `QUEUE_DAEMON_INTERVAL_MINUTES` | 5 | How often daemon polls queue (in minutes) |
+| `QUEUE_CLEANUP_AGE_DAYS` | 7 | Auto-cleanup completed/error items older than N days |
 
 ### Environment Variables for Agents
 
@@ -111,6 +113,10 @@ Each issue session gets its own git worktree to prevent conflicts:
 ├── worktrees/
 │   ├── github.com-shoko-kugetsu-14/     # Isolated workdir for issue #14
 │   └── github.com-shoko-kugetsu-15/     # Isolated workdir for issue #15
+├── queue/
+│   ├── items/                      # Queue item JSON files
+│   ├── daemon.pid                   # Daemon process ID
+│   └── daemon.log                  # Daemon log output
 └── index.json                       # Maps session IDs and issue refs to session files
 ```
 
@@ -258,16 +264,17 @@ kugetsu destroy --base -y
 
 ### kugetsu delegate `<message>`
 
-Send a message to the PM agent for task coordination (fire-and-forget):
+Send a message to the PM agent for task coordination via queue:
 ```bash
 kugetsu delegate "work on issue #14"
 kugetsu delegate "review PR #92"
 ```
 
-- Non-blocking: returns immediately, runs in background
-- PM agent processes the message asynchronously
-- Uses `KUGETSU_VERBOSITY` env var to control PM agent output verbosity
-- Log output stored in `~/.kugetsu/logs/delegate-<timestamp>.log`
+- **Always enqueues** (fire-and-forget): returns immediately
+- Queue daemon polls queue and invokes PM when slots available
+- Tasks are processed FIFO (first-in-first-out)
+- Use `kugetsu queue list` to see pending tasks
+- Use `kugetsu queue-daemon logs` to debug queue processing
 
 ### kugetsu logs [n]
 
@@ -328,35 +335,79 @@ kugetsu server default github   # Set default server
 kugetsu server get github       # Get server URL
 ```
 
-### kugetsu queue <list|enqueue|dequeue|clear>
+### kugetsu queue <list|stats|clear>
 
 Manage task queue for autonomous PM operation:
 ```bash
-kugetsu queue list              # Show queued tasks
-kugetsu queue enqueue "task"   # Add task to queue
-kugetsu queue dequeue          # Remove next task from queue
-kugetsu queue clear            # Clear all queued tasks
+kugetsu queue list              # Show queued tasks with status
+kugetsu queue stats            # Show queue statistics (total, pending, notified, completed, error)
+kugetsu queue clear            # Clean up old completed/error items
+kugetsu queue enqueue <issue-ref> <message>  # Manually enqueue a task
 ```
 
-- Queue stored in `~/.kugetsu/queue.json`
+**Queue Item States:**
+- `pending` - Waiting in queue, daemon can pick up
+- `notified` - PM agent has picked up the task
+- `completed` - Dev agent finished, PR created
+- `error` - Timeout or failure
+
+### kugetsu queue-daemon <start|stop|restart|status|logs>
+
+Manage the queue daemon background process:
+```bash
+kugetsu queue-daemon start     # Start daemon in background
+kugetsu queue-daemon stop      # Stop daemon
+kugetsu queue-daemon restart    # Restart daemon
+kugetsu queue-daemon status    # Check if daemon is running
+kugetsu queue-daemon logs       # Show recent daemon logs
+```
+
+**Daemon Behavior:**
+1. Runs at configurable interval (default: 5 minutes)
+2. Checks if active agents < MAX_CONCURRENT_AGENTS
+3. Picks 1-N pending items (configurable batch size)
+4. Forks PM session for each picked item
+5. PM decides whether to use `start` or `continue`
+
+**Queue Directory:**
+```
+~/.kugetsu/queue/
+├── items/                     # Queue item JSON files
+│   ├── q_1234567890.json    # One file per queued task
+│   └── q_1234567891.json
+├── daemon.pid                # Daemon process ID
+├── daemon.lock               # Daemon lock file
+└── daemon.log                # Daemon log output
+```
 
 ## Workflow Example
 
+### First-time Setup
 ```bash
-# First-time setup (requires TTY)
+# Initialize kugetsu (requires TTY)
 kugetsu init
-# Creates: base session + pm-agent session
 
-# Start work on issue
-kugetsu start github.com/shoko/kugetsu#14 "implement feature X"
-# Creates: worktree at ~/.kugetsu/worktrees/github.com-shoko-kugetsu-14/
+# Start the queue daemon (for autonomous operation)
+kugetsu queue-daemon start
+```
 
-# Continue later
+### Normal Workflow
+```bash
+# Enqueue tasks via delegate - agents will process them automatically
+kugetsu delegate "work on issue #14"
+kugetsu delegate "review PR #92"
+
+# Check queue status
+kugetsu queue list           # See pending tasks
+kugetsu queue stats         # See statistics
+
+# Debug queue daemon
+kugetsu queue-daemon status  # Is daemon running?
+kugetsu queue-daemon logs    # See daemon logs
+
+# Continue work on existing issue
 kugetsu continue github.com/shoko/kugetsu#14 "add tests"
 
-# Continue again
-kugetsu continue github.com/shoko/kugetsu#14 "fix failing test"
-
 # List all sessions
 kugetsu list
 
@@ -367,6 +418,21 @@ kugetsu prune --force
 kugetsu destroy github.com/shoko/kugetsu#14
 ```
 
+### Queue Daemon Management
+```bash
+# Check if daemon is running
+kugetsu queue-daemon status
+
+# View daemon logs for debugging
+kugetsu queue-daemon logs
+
+# Restart daemon if needed
+kugetsu queue-daemon restart
+
+# Stop daemon
+kugetsu queue-daemon stop
+```
+
 ## Headless Operation
 
 This design solves the headless CLI limitation discovered in Issue #14:

skills/kugetsu/tests/test-kugetsu-v2.sh

@@ -7,6 +7,8 @@
 set -euo pipefail
 
 KUGETSU="./skills/kugetsu/scripts/kugetsu"
+TEST_KUGETSU_DIR="/tmp/test-kugetsu-$$"
+export KUGETSU_DIR="$TEST_KUGETSU_DIR"
 TEST_ISSUE_REF="github.com/shoko/kugetsu#14"
 TEST_DISCUSS_REF="github.com/shoko/kugetsu#-discuss"
 TEST_BASE_SESSION_ID="ses_test_base_123"
@@ -18,28 +20,28 @@ PASS=0
 FAIL=0
 
 cleanup() {
-    rm -rf ~/.kugetsu/sessions/* ~/.kugetsu/worktrees/* ~/.kugetsu/index.json 2>/dev/null || true
+    rm -rf "$TEST_KUGETSU_DIR" 2>/dev/null || true
 }
 
 setup_mock_base() {
-    mkdir -p ~/.kugetsu/sessions ~/.kugetsu/worktrees
-    cat > ~/.kugetsu/index.json << EOF
+    mkdir -p "$TEST_KUGETSU_DIR/sessions" "$TEST_KUGETSU_DIR/worktrees"
+    cat > "$TEST_KUGETSU_DIR/index.json" << EOF
 {
   "base": "$TEST_BASE_SESSION_ID",
   "pm_agent": "$TEST_PM_AGENT_SESSION_ID",
   "issues": {}
 }
 EOF
-    cat > ~/.kugetsu/sessions/$TEST_BASE_SESSION_FILE << EOF
+    cat > "$TEST_KUGETSU_DIR/sessions/$TEST_BASE_SESSION_FILE" << EOF
 {"type": "base", "opencode_session_id": "$TEST_BASE_SESSION_ID", "created_at": "2026-03-29T18:00:00+02:00", "state": "idle"}
 EOF
-    cat > ~/.kugetsu/sessions/$TEST_PM_AGENT_SESSION_FILE << EOF
+    cat > "$TEST_KUGETSU_DIR/sessions/$TEST_PM_AGENT_SESSION_FILE" << EOF
 {"type": "pm_agent", "opencode_session_id": "$TEST_PM_AGENT_SESSION_ID", "created_at": "2026-03-29T18:00:00+02:00", "state": "idle"}
 EOF
 }
 
 setup_mock_forked() {
-    cat > ~/.kugetsu/index.json << EOF
+    cat > "$TEST_KUGETSU_DIR/index.json" << EOF
 {
   "base": "$TEST_BASE_SESSION_ID",
   "pm_agent": "$TEST_PM_AGENT_SESSION_ID",
@@ -48,7 +50,7 @@ setup_mock_forked() {
   }
 }
 EOF
-    cat > ~/.kugetsu/sessions/$TEST_FORKED_SESSION_FILE << EOF
+    cat > "$TEST_KUGETSU_DIR/sessions/$TEST_FORKED_SESSION_FILE" << EOF
 {"type": "forked", "issue_ref": "$TEST_ISSUE_REF", "opencode_session_id": "ses_forked_789", "worktree_path": "/tmp/test-worktree", "created_at": "2026-03-29T18:00:00+02:00", "state": "idle"}
 EOF
 }
@@ -112,16 +114,16 @@ echo ""
 
 # Test 3b: start fails without pm-agent
 echo "--- Test: start without pm-agent session ---"
-rm -f ~/.kugetsu/index.json ~/.kugetsu/sessions/*
-mkdir -p ~/.kugetsu/sessions
-cat > ~/.kugetsu/index.json << EOF
+rm -f $TEST_KUGETSU_DIR/index.json $TEST_KUGETSU_DIR/sessions/*
+mkdir -p $TEST_KUGETSU_DIR/sessions
+cat > $TEST_KUGETSU_DIR/index.json << EOF
 {
   "base": "$TEST_BASE_SESSION_ID",
   "pm_agent": null,
   "issues": {}
 }
 EOF
-cat > ~/.kugetsu/sessions/$TEST_BASE_SESSION_FILE << EOF
+cat > $TEST_KUGETSU_DIR/sessions/$TEST_BASE_SESSION_FILE << EOF
 {"type": "base", "opencode_session_id": "$TEST_BASE_SESSION_ID", "created_at": "2026-03-29T18:00:00+02:00", "state": "idle"}
 EOF
 OUTPUT=$($KUGETSU start github.com/shoko/kugetsu#14 "test" 2>&1 || true)
@@ -176,7 +178,7 @@ echo ""
 
 # Test 6c: index.json has pm_agent field
 echo "--- Test: index.json has pm_agent field ---"
-if grep -q '"pm_agent"' ~/.kugetsu/index.json; then
+if grep -q '"pm_agent"' $TEST_KUGETSU_DIR/index.json; then
     pass "index.json has pm_agent field"
 else
     fail "index.json missing pm_agent field"
@@ -227,12 +229,12 @@ echo ""
 echo "--- Test: destroy --pm-agent -y ---"
 setup_mock_base
 OUTPUT=$($KUGETSU destroy --pm-agent -y 2>&1 || true)
-if [ -f ~/.kugetsu/sessions/$TEST_PM_AGENT_SESSION_FILE ]; then
+if [ -f $TEST_KUGETSU_DIR/sessions/$TEST_PM_AGENT_SESSION_FILE ]; then
     fail "destroy --pm-agent -y removes pm-agent file"
 else
     pass "destroy --pm-agent -y removes pm-agent file"
 fi
-if grep -q '"pm_agent": null' ~/.kugetsu/index.json; then
+if grep -q '"pm_agent": null' $TEST_KUGETSU_DIR/index.json; then
     pass "destroy --pm-agent -y sets pm_agent to null in index"
 else
     fail "destroy --pm-agent -y should set pm_agent to null"
@@ -243,7 +245,7 @@ echo ""
 echo "--- Test: destroy --base -y ---"
 setup_mock_base
 OUTPUT=$($KUGETSU destroy --base -y 2>&1 || true)
-if [ -f ~/.kugetsu/sessions/$TEST_BASE_SESSION_FILE ]; then
+if [ -f $TEST_KUGETSU_DIR/sessions/$TEST_BASE_SESSION_FILE ]; then
     fail "destroy --base -y removes base file"
 else
     pass "destroy --base -y removes base file"
@@ -292,7 +294,7 @@ echo ""
 
 # Test 15: worktree path in session file
 echo "--- Test: worktree_path in session file ---"
-if grep -q "worktree_path" ~/.kugetsu/sessions/$TEST_FORKED_SESSION_FILE; then
+if grep -q "worktree_path" $TEST_KUGETSU_DIR/sessions/$TEST_FORKED_SESSION_FILE; then
     pass "session file contains worktree_path"
 else
     fail "session file missing worktree_path"
@@ -303,7 +305,7 @@ echo ""
 echo "--- Test: prune with orphaned worktree ---"
 cleanup
 setup_mock_base
-mkdir -p ~/.kugetsu/worktrees/orphaned-worktree
+mkdir -p $TEST_KUGETSU_DIR/worktrees/orphaned-worktree
 OUTPUT=$($KUGETSU prune 2>&1 || true)
 if echo "$OUTPUT" | grep -q "orphaned worktree"; then
     pass "prune detects orphaned worktree"
@@ -315,7 +317,7 @@ echo ""
 # Test 17: prune --force removes orphaned worktrees
 echo "--- Test: prune --force removes orphaned worktrees ---"
 OUTPUT=$($KUGETSU prune --force 2>&1 || true)
-if [ -d ~/.kugetsu/worktrees/orphaned-worktree ]; then
+if [ -d $TEST_KUGETSU_DIR/worktrees/orphaned-worktree ]; then
     fail "prune --force should remove orphaned worktree"
 else
     pass "prune --force removes orphaned worktree"
@@ -332,10 +334,10 @@ echo ""
 echo "--- Test: destroy removes worktree ---"
 cleanup
 setup_mock_forked
-# remove_worktree_for_issue derives path from issue ref: ~/.kugetsu/worktrees/github.com-shoko-kugetsu-14
-mkdir -p ~/.kugetsu/worktrees/github.com-shoko-kugetsu-14
+# remove_worktree_for_issue derives path from issue ref: $TEST_KUGETSU_DIR/worktrees/github.com-shoko-kugetsu-14
+mkdir -p $TEST_KUGETSU_DIR/worktrees/github.com-shoko-kugetsu-14
 OUTPUT=$($KUGETSU destroy github.com/shoko/kugetsu#14 -y 2>&1 || true)
-if [ -d ~/.kugetsu/worktrees/github.com-shoko-kugetsu-14 ]; then
+if [ -d $TEST_KUGETSU_DIR/worktrees/github.com-shoko-kugetsu-14 ]; then
     fail "destroy should remove worktree"
 else
     pass "destroy removes worktree"
@@ -345,7 +347,7 @@ echo ""
 # Test 20: session file properly formatted for v2.2
 echo "--- Test: session file format v2.2 ---"
 setup_mock_forked
-SESSION_CONTENT=$(cat ~/.kugetsu/sessions/$TEST_FORKED_SESSION_FILE)
+SESSION_CONTENT=$(cat $TEST_KUGETSU_DIR/sessions/$TEST_FORKED_SESSION_FILE)
 if echo "$SESSION_CONTENT" | grep -q '"type": "forked"' && \
    echo "$SESSION_CONTENT" | grep -q '"worktree_path"'; then
     pass "session file has v2.2 format"
@@ -367,8 +369,8 @@ echo ""
 
 # Test 22: status when base missing
 echo "--- Test: status (base missing) ---"
-mkdir -p ~/.kugetsu/sessions
-cat > ~/.kugetsu/index.json << EOF
+mkdir -p $TEST_KUGETSU_DIR/sessions
+cat > $TEST_KUGETSU_DIR/index.json << EOF
 {
   "base": null,
   "pm_agent": "$TEST_PM_AGENT_SESSION_ID",
@@ -385,7 +387,7 @@ echo ""
 
 # Test 23: status when pm-agent missing
 echo "--- Test: status (pm-agent missing) ---"
-cat > ~/.kugetsu/index.json << EOF
+cat > $TEST_KUGETSU_DIR/index.json << EOF
 {
   "base": "$TEST_BASE_SESSION_ID",
   "pm_agent": null,
@@ -402,7 +404,7 @@ echo ""
 
 # Test 24: status when pm-agent is "None" (Python None output)
 echo "--- Test: status (pm-agent is Python None) ---"
-cat > ~/.kugetsu/index.json << EOF
+cat > $TEST_KUGETSU_DIR/index.json << EOF
 {
   "base": "$TEST_BASE_SESSION_ID",
   "pm_agent": "None",
@@ -445,8 +447,8 @@ echo ""
 # Test 27: delegate when pm-agent missing
 echo "--- Test: delegate (pm-agent missing) ---"
 cleanup
-mkdir -p ~/.kugetsu/sessions ~/.kugetsu/worktrees
-cat > ~/.kugetsu/index.json << EOF
+mkdir -p $TEST_KUGETSU_DIR/sessions $TEST_KUGETSU_DIR/worktrees
+cat > $TEST_KUGETSU_DIR/index.json << EOF
 {
   "base": "$TEST_BASE_SESSION_ID",
   "pm_agent": null,
@@ -508,7 +510,7 @@ echo ""
 # Test 32: delegate is fire-and-forget (returns immediately)
 echo "--- Test: delegate is fire-and-forget ---"
 setup_mock_base
-mkdir -p ~/.kugetsu/logs
+mkdir -p $TEST_KUGETSU_DIR/logs
 START=$(date +%s)
 OUTPUT=$($KUGETSU delegate "test fire-and-forget" 2>&1 || true)
 END=$(date +%s)
@@ -527,10 +529,10 @@ echo ""
 # Test 33: delegate creates log file
 echo "--- Test: delegate creates log file ---"
 setup_mock_base
-LOG_COUNT_BEFORE=$(ls ~/.kugetsu/logs/*.log 2>/dev/null | wc -l)
+LOG_COUNT_BEFORE=$(ls $TEST_KUGETSU_DIR/logs/*.log 2>/dev/null | wc -l)
 $KUGETSU delegate "test log file" 2>&1 || true
 sleep 1
-LOG_COUNT_AFTER=$(ls ~/.kugetsu/logs/*.log 2>/dev/null | wc -l)
+LOG_COUNT_AFTER=$(ls $TEST_KUGETSU_DIR/logs/*.log 2>/dev/null | wc -l)
 if [ $LOG_COUNT_AFTER -gt $LOG_COUNT_BEFORE ]; then
     pass "delegate creates log file"
 else
@@ -558,10 +560,10 @@ echo ""
 
 # Test E2: env set creates file
 echo "--- Test: env set creates env file ---"
-mkdir -p ~/.kugetsu/env
-rm -f ~/.kugetsu/env/pm-agent.env
+mkdir -p $TEST_KUGETSU_DIR/env
+rm -f $TEST_KUGETSU_DIR/env/pm-agent.env
 $KUGETSU env set TEST_VAR "test_value" pm-agent 2>&1 || true
-if [ -f ~/.kugetsu/env/pm-agent.env ]; then
+if [ -f $TEST_KUGETSU_DIR/env/pm-agent.env ]; then
     pass "env set creates pm-agent.env file"
 else
     fail "env set did not create pm-agent.env"
@@ -570,7 +572,7 @@ echo ""
 
 # Test E3: env show masks sensitive values
 echo "--- Test: env show masks sensitive values ---"
-cat > ~/.kugetsu/env/pm-agent.env << 'ENVEOF'
+cat > $TEST_KUGETSU_DIR/env/pm-agent.env << 'ENVEOF'
 export GITEA_TOKEN="secret_token_123"
 export MY_VAR="visible_value"
 ENVEOF
@@ -584,14 +586,14 @@ echo ""
 
 # Test E4: Variables exported to child processes via set -a
 echo "--- Test: set -a exports variables to children ---"
-mkdir -p ~/.kugetsu/env
-cat > ~/.kugetsu/env/test.env << 'ENVEOF'
+mkdir -p $TEST_KUGETSU_DIR/env
+cat > $TEST_KUGETSU_DIR/env/test.env << 'ENVEOF'
 export EXPORT_TEST="exported_value"
 SIMPLE_TEST="not_exported"
 ENVEOF
 
 # Simulate what cmd_delegate does
-ENV_FILE="~/.kugetsu/env/test.env"
+ENV_FILE="$TEST_KUGETSU_DIR/env/test.env"
 env_sh="set -a; source '$ENV_FILE'; set +a; "
 result=$(bash -c "${env_sh}bash -c 'echo \$EXPORT_TEST'")
 
@@ -604,11 +606,11 @@ echo ""
 
 # Test E5: pm-agent.env takes precedence
 echo "--- Test: pm-agent.env takes precedence over default ---"
-mkdir -p ~/.kugetsu/env
-cat > ~/.kugetsu/env/default.env << 'ENVEOF'
+mkdir -p $TEST_KUGETSU_DIR/env
+cat > $TEST_KUGETSU_DIR/env/default.env << 'ENVEOF'
 export GITEA_TOKEN="default_token"
 ENVEOF
-cat > ~/.kugetsu/env/pm-agent.env << 'ENVEOF'
+cat > $TEST_KUGETSU_DIR/env/pm-agent.env << 'ENVEOF'
 export GITEA_TOKEN="pm_agent_token"
 ENVEOF
 
@@ -644,7 +646,7 @@ fi
 echo ""
 
 # Cleanup env files
-rm -rf ~/.kugetsu/env 2>/dev/null || true
+rm -rf $TEST_KUGETSU_DIR/env 2>/dev/null || true
 
 # Test E7: fix_session_permissions function exists
 echo "--- Test: fix_session_permissions function exists ---"
@@ -736,7 +738,7 @@ PASS=0
 FAIL=0
 
 test_cleanup() {
-    rm -rf ~/.kugetsu/sessions/* ~/.kugetsu/worktrees/* ~/.kugetsu/index.json ~/.kugetsu/logs/* ~/.kugetsu/.agent_count ~/.kugetsu/.agent_lock 2>/dev/null || true
+    rm -rf $TEST_KUGETSU_DIR/sessions/* $TEST_KUGETSU_DIR/worktrees/* $TEST_KUGETSU_DIR/index.json $TEST_KUGETSU_DIR/logs/* $TEST_KUGETSU_DIR/.agent_count $TEST_KUGETSU_DIR/.agent_lock 2>/dev/null || true
 }
 
 pass() {
@@ -750,25 +752,25 @@ fail() {
 }
 
 setup_mock_sessions() {
-    mkdir -p ~/.kugetsu/sessions ~/.kugetsu/worktrees ~/.kugetsu/logs
-    cat > ~/.kugetsu/index.json << INDEX
+    mkdir -p $TEST_KUGETSU_DIR/sessions $TEST_KUGETSU_DIR/worktrees $TEST_KUGETSU_DIR/logs
+    cat > $TEST_KUGETSU_DIR/index.json << INDEX
 {
   "base": "ses_test_base_123",
   "pm_agent": "ses_test_pm_456",
   "issues": {}
 }
 INDEX
-    echo '{"type": "base", "opencode_session_id": "ses_test_base_123", "created_at": "2026-03-29T18:00:00+02:00", "state": "idle"}' > ~/.kugetsu/sessions/base.json
-    echo '{"type": "pm_agent", "opencode_session_id": "ses_test_pm_456", "created_at": "2026-03-29T18:00:00+02:00", "state": "idle"}' > ~/.kugetsu/sessions/pm-agent.json
+    echo '{"type": "base", "opencode_session_id": "ses_test_base_123", "created_at": "2026-03-29T18:00:00+02:00", "state": "idle"}' > $TEST_KUGETSU_DIR/sessions/base.json
+    echo '{"type": "pm_agent", "opencode_session_id": "ses_test_pm_456", "created_at": "2026-03-29T18:00:00+02:00", "state": "idle"}' > $TEST_KUGETSU_DIR/sessions/pm-agent.json
 }
 
 # Test C1: Agent count file is initialized to 0
 echo "--- Test: agent count file initialized ---"
 test_cleanup
-mkdir -p ~/.kugetsu/sessions ~/.kugetsu/worktrees
+mkdir -p $TEST_KUGETSU_DIR/sessions $TEST_KUGETSU_DIR/worktrees
 $KUGETSU list > /dev/null 2>&1 || true
-if [ -f ~/.kugetsu/.agent_count ]; then
-    COUNT=$(cat ~/.kugetsu/.agent_count)
+if [ -f $TEST_KUGETSU_DIR/.agent_count ]; then
+    COUNT=$(cat $TEST_KUGETSU_DIR/.agent_count)
     if [ "$COUNT" = "0" ]; then
         pass "agent count file initialized to 0"
     else
@@ -795,10 +797,10 @@ test_cleanup
 setup_mock_sessions
 
 # Initialize count to 0
-echo 0 > ~/.kugetsu/.agent_count
+echo 0 > $TEST_KUGETSU_DIR/.agent_count
 
 # Verify initial state
-INITIAL=$(cat ~/.kugetsu/.agent_count)
+INITIAL=$(cat $TEST_KUGETSU_DIR/.agent_count)
 if [ "$INITIAL" = "0" ]; then
     pass "agent count starts at 0"
 else
@@ -809,7 +811,7 @@ fi
 $KUGETSU list > /dev/null 2>&1
 
 # Verify count is still 0 (no slot leak)
-AFTER=$(cat ~/.kugetsu/.agent_count)
+AFTER=$(cat $TEST_KUGETSU_DIR/.agent_count)
 if [ "$AFTER" = "0" ]; then
     pass "agent count stays 0 after list (no leak)"
 else