refactor(coding-agent): renamed todo_write tool to todo

- Renamed `TodoWriteTool` to `TodoTool` and its source/prompt files.
- Updated tool registration, schema, renderers, and gating to `todo`.
- Adjusted cursor provider native tool names and tests to match.
- Renamed strike-animation constants and `todo-error-reminder` type.

packages/coding-agent/src/session/agent-session.ts

@@ -203,7 +203,7 @@ import type { CheckpointState } from "../tools/checkpoint";
 import { outputMeta } from "../tools/output-meta";
 import { normalizeLocalScheme, resolveToCwd } from "../tools/path-utils";
 import { isAutoQaEnabled } from "../tools/report-tool-issue";
-import { getLatestTodoPhasesFromEntries, type TodoItem, type TodoPhase } from "../tools/todo-write";
+import { getLatestTodoPhasesFromEntries, type TodoItem, type TodoPhase } from "../tools/todo";
 import { ToolAbortError, ToolError } from "../tools/tool-errors";
 import { clampTimeout } from "../tools/tool-timeouts";
 import { parseCommandArgs } from "../utils/command-args";
@@ -1807,21 +1807,21 @@ export class AgentSession {
 				if (toolName === "edit" && details?.path) {
 					this.#invalidateFileCacheForPath(details.path);
 				}
-				if (toolName === "todo_write" && !isError && Array.isArray(details?.phases)) {
+				if (toolName === "todo" && !isError && Array.isArray(details?.phases)) {
 					this.setTodoPhases(details.phases);
 				}
-				if (toolName === "todo_write" && isError) {
+				if (toolName === "todo" && isError) {
 					const errorText = content?.find(part => part.type === "text")?.text;
 					const reminderText = [
 						"<system-reminder>",
-						"todo_write failed, so todo progress is not visible to the user.",
-						errorText ? `Failure: ${errorText}` : "Failure: todo_write returned an error.",
-						"Fix the todo payload and call todo_write again before continuing.",
+						"todo failed, so todo progress is not visible to the user.",
+						errorText ? `Failure: ${errorText}` : "Failure: todo returned an error.",
+						"Fix the todo payload and call todo again before continuing.",
 						"</system-reminder>",
 					].join("\n");
 					await this.sendCustomMessage(
 						{
-							customType: "todo-write-error-reminder",
+							customType: "todo-error-reminder",
 							content: reminderText,
 							display: false,
 							details: { toolName, errorText },
@@ -4994,7 +4994,7 @@ export class AgentSession {
 	// splice mutated canonical `#todoPhases` between tool calls, so the model
 	// observed phase totals shrinking ("5 → 4") after marking tasks done. The
 	// `tasks.todoClearDelay` setting is now inert; completed tasks survive
-	// until the next explicit `todo_write` call removes them via `rm`/`drop`.
+	// until the next explicit `todo` call removes them via `rm`/`drop`.
 
 	/**
 	 * Abort current operation and wait for agent to become idle.
@@ -6553,16 +6553,16 @@ export class AgentSession {
 			return undefined;
 		}
 
-		if (!this.#toolRegistry.has("todo_write")) {
-			logger.warn("Eager todo enforcement skipped because todo_write is unavailable", {
+		if (!this.#toolRegistry.has("todo")) {
+			logger.warn("Eager todo enforcement skipped because todo is unavailable", {
 				activeToolNames: this.agent.state.tools.map(tool => tool.name),
 			});
 			return undefined;
 		}
 
-		const todoWriteToolChoice = buildNamedToolChoice("todo_write", this.model);
-		if (!todoWriteToolChoice) {
-			logger.warn("Eager todo enforcement skipped because the current model does not support forcing todo_write", {
+		const todoToolChoice = buildNamedToolChoice("todo", this.model);
+		if (!todoToolChoice) {
+			logger.warn("Eager todo enforcement skipped because the current model does not support forcing todo", {
 				modelApi: this.model?.api,
 				modelId: this.model?.id,
 			});
@@ -6580,7 +6580,7 @@ export class AgentSession {
 				attribution: "agent",
 				timestamp: Date.now(),
 			},
-			toolChoice: todoWriteToolChoice,
+			toolChoice: todoToolChoice,
 		};
 	}
 	/**

packages/coding-agent/src/session/redis-session-storage.ts

@@ -1,5 +1,9 @@
 import { logger, toError } from "@oh-my-pi/pi-utils";
-import { IndexedSessionStorage, type SessionStorageBackend, type SessionStorageIndexEntry } from "./indexed-session-storage";
+import {
+	IndexedSessionStorage,
+	type SessionStorageBackend,
+	type SessionStorageIndexEntry,
+} from "./indexed-session-storage";
 
 /**
  * Minimal subset of the `bun:redis` `RedisClient` surface used by

packages/coding-agent/src/session/session-storage.ts

@@ -151,7 +151,6 @@ export class FileSessionStorage implements SessionStorage {
 		fs.writeFileSync(fpath, content);
 	}
 
-
 	statSync(path: string): SessionStorageStat {
 		const stats = fs.statSync(path);
 		return { size: stats.size, mtimeMs: stats.mtimeMs, mtime: stats.mtime };
@@ -465,7 +464,6 @@ export class MemorySessionStorage implements SessionStorage {
 		entry.mtimeMs = mtimeMs;
 	}
 
-
 	statSync(path: string): SessionStorageStat {
 		const entry = this.#requireEntry(path);
 		return {

packages/coding-agent/src/session/sql-session-storage.ts

@@ -1,4 +1,8 @@
-import { IndexedSessionStorage, type SessionStorageBackend, type SessionStorageIndexEntry } from "./indexed-session-storage";
+import {
+	IndexedSessionStorage,
+	type SessionStorageBackend,
+	type SessionStorageIndexEntry,
+} from "./indexed-session-storage";
 
 /**
  * Supported `bun:sql` adapter dialects. `Bun.SQL` reports this string on
@@ -276,7 +280,9 @@ class SqlSessionStorageBackend implements SessionStorageBackend {
 
 	async readSlices(path: string, prefixBytes: number, suffixBytes: number): Promise<[string, string]> {
 		const values =
-			this.#adapter === "postgres" ? [prefixBytes, suffixBytes, path] : [prefixBytes, suffixBytes, suffixBytes, path];
+			this.#adapter === "postgres"
+				? [prefixBytes, suffixBytes, path]
+				: [prefixBytes, suffixBytes, suffixBytes, path];
 		const rows = (await this.#client.unsafe(this.#q.readSlices, values)) as SliceRow[];
 		const row = rows[0];
 		if (!row) throw enoent(path);