diff --git a/AGENTS.md b/AGENTS.md
index 76ef1c8..8ea5482 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -29,7 +29,7 @@
 <!-- gitnexus:start -->
 # GitNexus — Code Intelligence
 
-This project is indexed by GitNexus as **miyabi-cli-standalone** (5123 symbols, 11334 relationships, 300 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
+This project is indexed by GitNexus as **miyabi-cli-standalone** (5232 symbols, 11415 relationships, 300 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
 
 > If any GitNexus tool warns the index is stale, run `npx gitnexus analyze` in terminal first.
 
diff --git a/CLAUDE.md b/CLAUDE.md
index fd73c73..322cc49 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -121,7 +121,7 @@ miyabi agent run coordinator --issue <番号>
 <!-- gitnexus:start -->
 # GitNexus — Code Intelligence
 
-This project is indexed by GitNexus as **miyabi-cli-standalone** (5123 symbols, 11334 relationships, 300 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
+This project is indexed by GitNexus as **miyabi-cli-standalone** (5232 symbols, 11415 relationships, 300 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
 
 > If any GitNexus tool warns the index is stale, run `npx gitnexus analyze` in terminal first.
 
diff --git a/project_memory/tasks.json b/project_memory/tasks.json
index c684d6e..86744ad 100644
--- a/project_memory/tasks.json
+++ b/project_memory/tasks.json
@@ -1,141 +1,60 @@
 {
-  "version": 1,
-  "last_updated": "2026-04-10T00:00:00Z",
+  "version": 2,
+  "last_updated": "2026-04-10T01:30:00Z",
   "tasks": [
     {
-      "id": "phase-0",
-      "title": "前提条件の確定",
+      "id": "phase-a",
+      "title": "GATE + Lock + Store + Protocol（4ファイル新規）",
       "github_issue_number": 0,
-      "state": "done",
+      "state": "implementing",
       "dependencies": [],
-      "dependents": ["phase-1"],
+      "dependents": ["phase-b", "phase-c"],
+      "soft_dependencies": [],
+      "lock": {
+        "locked_by": "codex-a@macbook-pro",
+        "locked_at": "2026-04-10T01:30:00Z",
+        "ttl_secs": 3600,
+        "affected_files": [
+          "crates/miyabi-core/src/gate.rs",
+          "crates/miyabi-core/src/lock.rs",
+          "crates/miyabi-core/src/protocol.rs",
+          "crates/miyabi-core/src/store.rs"
+        ]
+      },
+      "impact": {
+        "risk_level": "LOW",
+        "affected_symbols": 0,
+        "depth1": [],
+        "analyzed_at": "2026-04-10T01:25:00Z"
+      },
+      "branch_name": null,
+      "pr_number": null,
+      "merge_commit": null,
+      "created_at": "2026-04-10T01:30:00Z",
+      "updated_at": "2026-04-10T01:30:00Z"
+    },
+    {
+      "id": "phase-b",
+      "title": "CLI サブコマンド追加",
+      "github_issue_number": 0,
+      "state": "pending",
+      "dependencies": ["phase-a"],
+      "dependents": ["phase-c"],
       "soft_dependencies": [],
       "lock": null,
       "impact": null,
       "branch_name": null,
       "pr_number": null,
       "merge_commit": null,
-      "created_at": "2026-04-10T00:00:00Z",
-      "updated_at": "2026-04-10T00:55:00Z"
+      "created_at": "2026-04-10T01:30:00Z",
+      "updated_at": "2026-04-10T01:30:00Z"
     },
     {
-      "id": "phase-1",
-      "title": "型定義ハードニング",
+      "id": "phase-c",
+      "title": "GitHub Evidence + E2E テスト",
       "github_issue_number": 0,
       "state": "pending",
-      "dependencies": ["phase-0"],
-      "dependents": ["phase-2", "phase-3"],
-      "soft_dependencies": [],
-      "lock": null,
-      "impact": null,
-      "branch_name": null,
-      "pr_number": null,
-      "merge_commit": null,
-      "created_at": "2026-04-10T00:00:00Z",
-      "updated_at": "2026-04-10T00:00:00Z"
-    },
-    {
-      "id": "phase-2",
-      "title": "ステートマシンにGATE predicate統合",
-      "github_issue_number": 0,
-      "state": "pending",
-      "dependencies": ["phase-1"],
-      "dependents": ["phase-6"],
-      "soft_dependencies": [],
-      "lock": null,
-      "impact": null,
-      "branch_name": null,
-      "pr_number": null,
-      "merge_commit": null,
-      "created_at": "2026-04-10T00:00:00Z",
-      "updated_at": "2026-04-10T00:00:00Z"
-    },
-    {
-      "id": "phase-3",
-      "title": "Event Store (JSONL + Snapshot)",
-      "github_issue_number": 0,
-      "state": "pending",
-      "dependencies": ["phase-1"],
-      "dependents": ["phase-4", "phase-5"],
-      "soft_dependencies": [],
-      "lock": null,
-      "impact": null,
-      "branch_name": null,
-      "pr_number": null,
-      "merge_commit": null,
-      "created_at": "2026-04-10T00:00:00Z",
-      "updated_at": "2026-04-10T00:00:00Z"
-    },
-    {
-      "id": "phase-4",
-      "title": "File Lock Manager (lease + heartbeat)",
-      "github_issue_number": 0,
-      "state": "pending",
-      "dependencies": ["phase-3"],
-      "dependents": ["phase-6"],
-      "soft_dependencies": [],
-      "lock": null,
-      "impact": null,
-      "branch_name": null,
-      "pr_number": null,
-      "merge_commit": null,
-      "created_at": "2026-04-10T00:00:00Z",
-      "updated_at": "2026-04-10T00:00:00Z"
-    },
-    {
-      "id": "phase-5",
-      "title": "GitHub同期 (Evidence Fetcher + Deterministic Sync)",
-      "github_issue_number": 0,
-      "state": "pending",
-      "dependencies": ["phase-3"],
-      "dependents": ["phase-6"],
-      "soft_dependencies": [],
-      "lock": null,
-      "impact": null,
-      "branch_name": null,
-      "pr_number": null,
-      "merge_commit": null,
-      "created_at": "2026-04-10T00:00:00Z",
-      "updated_at": "2026-04-10T00:00:00Z"
-    },
-    {
-      "id": "phase-6",
-      "title": "Protocol統合（全GATEを1クラスに結合）",
-      "github_issue_number": 0,
-      "state": "pending",
-      "dependencies": ["phase-2", "phase-3", "phase-4", "phase-5"],
-      "dependents": ["phase-7"],
-      "soft_dependencies": [],
-      "lock": null,
-      "impact": null,
-      "branch_name": null,
-      "pr_number": null,
-      "merge_commit": null,
-      "created_at": "2026-04-10T00:00:00Z",
-      "updated_at": "2026-04-10T00:00:00Z"
-    },
-    {
-      "id": "phase-7",
-      "title": "CLI (dtp コマンド)",
-      "github_issue_number": 0,
-      "state": "pending",
-      "dependencies": ["phase-6"],
-      "dependents": ["phase-8"],
-      "soft_dependencies": [],
-      "lock": null,
-      "impact": null,
-      "branch_name": null,
-      "pr_number": null,
-      "merge_commit": null,
-      "created_at": "2026-04-10T00:00:00Z",
-      "updated_at": "2026-04-10T00:00:00Z"
-    },
-    {
-      "id": "phase-8",
-      "title": "E2E統合テスト + OpenClaw連携",
-      "github_issue_number": 0,
-      "state": "pending",
-      "dependencies": ["phase-7"],
+      "dependencies": ["phase-a", "phase-b"],
       "dependents": [],
       "soft_dependencies": [],
       "lock": null,
@@ -143,18 +62,19 @@
       "branch_name": null,
       "pr_number": null,
       "merge_commit": null,
-      "created_at": "2026-04-10T00:00:00Z",
-      "updated_at": "2026-04-10T00:00:00Z"
+      "created_at": "2026-04-10T01:30:00Z",
+      "updated_at": "2026-04-10T01:30:00Z"
     }
   ],
-  "file_locks": {},
+  "file_locks": {
+    "crates/miyabi-core/src/gate.rs": "phase-a",
+    "crates/miyabi-core/src/lock.rs": "phase-a",
+    "crates/miyabi-core/src/protocol.rs": "phase-a",
+    "crates/miyabi-core/src/store.rs": "phase-a"
+  },
   "dag_levels": [
-    ["phase-0"],
-    ["phase-1"],
-    ["phase-2", "phase-3"],
-    ["phase-4", "phase-5"],
-    ["phase-6"],
-    ["phase-7"],
-    ["phase-8"]
+    ["phase-a"],
+    ["phase-b"],
+    ["phase-c"]
   ]
 }