diff --git a/.gitignore b/.gitignore
index b3d907c544..544474e2b5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,3 +63,4 @@ gemini-debug.log
 evals/logs/
 
 .tracker/
+plans/
diff --git a/plans/task-tracker-implementation.md b/plans/task-tracker-implementation.md
deleted file mode 100644
index c8ec1dc41e..0000000000
--- a/plans/task-tracker-implementation.md
+++ /dev/null
@@ -1,101 +0,0 @@
-# Task Tracker Implementation Plan
-
-This document outlines the phased implementation of the Git-backed, graph-based
-Task Tracker for Gemini CLI.
-
-## Phase 1: Foundation & Data Model
-
-**Goal:** Establish the storage mechanism and the core task schema.
-
-### Tasks
-
-- [x] **Storage Infrastructure:**
-  - Implement a `TrackerService` in `packages/core/src/services/`.
-  - Create logic to manage `.tracker/tasks/` directory.
-  - Implement 6-character alphanumeric ID generation (hex).
-- [x] **Data Model (JSON Schema):**
-  - `id`: string (6 chars)
-  - `title`: string
-  - `description`: string
-  - `type`: `epic` | `task` | `bug`
-  - `status`: `open` | `in_progress` | `blocked` | `closed`
-  - `parentId`: string (optional)
-  - `dependencies`: string[] (list of IDs)
-  - `subagentSessionId`: string (optional)
-  - `metadata`: object (optional)
-- [x] **Graph Validation Logic:**
-  - Prevent `closed` status if dependencies are not `closed`.
-  - Ensure no circular dependencies.
-
-**Success Criteria:** Can manually create and read task files with valid schemas
-and basic dependency checks.
-
----
-
-## Phase 2: CRUD Tools & Visualization
-
-**Goal:** Enable the agent to interact with the tracker via CLI tools.
-
-### Tasks
-
-- [x] **Infrastructure:**
-  - [x] Add `trackerEnabled` to `ConfigParams` and `Config` in `packages/core`.
-  - [x] Guard tracker tool registration in `Config.createToolRegistry`.
-  - [x] Add `experimental.taskTracker` to `SETTINGS_SCHEMA` in `packages/cli`.
-  - [x] Pass `taskTracker` setting to `Config` in `loadCliConfig`.
-- [x] **Core Tools:**
-  - [x] `tracker_init`: Setup `.tracker` in current workspace.
-  - [x] `tracker_create_task`: Create a new JSON node.
-  - [x] `tracker_update_task`: Modify existing node (handle status transitions).
-  - [x] `tracker_get_task`: Retrieve single task details.
-  - [x] `tracker_list_tasks`: Filtered list (by status, parent, etc.).
-- [x] **Relationship Tools:**
-  - [x] `tracker_add_dependency`: Link two existing tasks.
-- [x] **CLI Visualization:**
-  - [x] `tracker_visualize`: Render ASCII tree with emojis (⭕, 🚧, ✅, 🚫).
-- [x] **Testing:**
-  - [x] Implement integration tests in `trackerTools.test.ts`.
-
-**Success Criteria:** Tools are registered and usable in the CLI;
-`tracker_visualize` shows a clear hierarchy.
-
----
-
-## Phase 3: System Instruction (SI) & Integration
-
-**Goal:** Shift the agent's behavior to treat the tracker as the Single Source
-of Truth (SSOT).
-
-### Tasks
-
-- [ ] **System Instruction Update:**
-  - Inject the "TASK MANAGEMENT PROTOCOL" into the core prompt.
-  - Mandate use of `tracker_list_tasks` at session start.
-- [ ] **Plan Mode Integration:**
-  - Implement `tracker_hydrate(planPath)` to turn a plan into tracker nodes.
-- [ ] **Session Restoration:**
-  - Modify the startup flow to check for existing `.tracker` and prompt the
-    agent to resume pending tasks.
-
-**Success Criteria:** Agent stops using markdown checklists and consistently
-uses `tracker_create_task` for multi-step goals.
-
----
-
-## Phase 4: Persistence & Advanced Features
-
-**Goal:** Ensure long-term durability and multi-agent support.
-
-### Tasks
-
-- [ ] **Git Synchronization:**
-  - `tracker_sync`: Commit the `.tracker` directory to the current branch.
-- [ ] **Git Worktree (V2):**
-  - Implement mounting a `tracker-data` orphan branch to `.tracker/` to allow
-    cross-branch persistence.
-- [ ] **Subagent Coordination:**
-  - Update `SubagentService` to automatically update the tracker when a subagent
-    is spawned.
-
-**Success Criteria:** Task state persists across branch switches and multiple
-agent sessions.