fix(schedule): reconcile latest master contracts

docs/tool-catalog.md

@@ -27,6 +27,7 @@ This table connects model-visible tool names to the plugin package and service s
 | `@deepseek-ai/dsh-tool-fs-search` | `glob`, `grep` | `ctx.tools`, `ctx.subprocess`, `ctx.systemPrompt` | `tool/call`, `tool/result` | - | glob and grep are unconditional discovery tools that spawn the packaged ripgrep binary (`@vscode/ripgrep`) through ctx.subprocess as ordinary foreground calls (never background tasks) — no host `rg` install and no shell layer. The catalog uses `sampleOverCapGlobResults: true`; deployments must choose that behavior explicitly. Capped results save the complete formatted list through the optional ctx.spillStore backend; returned locators are follow-up-readable/searchable when the backend exposes local paths in co-located deployments. |
 | `@deepseek-ai/dsh-tool-pty` | `terminal_close`, `terminal_list`, `terminal_open`, `terminal_read`, `terminal_send`, `terminal_signal` | `ctx.tools`, `ctx.pty`, `ctx.systemPrompt`, `ctx.tasks at call time for run_in_background` | `tool/call`, `tool/result` | - | The six terminal tools are opt-in and complement one-shot bash/filesystem tools. `terminal_send(run_in_background: true)` registers with `ctx.tasks`; TUI, named key sequences, BEL, resize, auto-start, and cross-agent sharing are absent from the schema. |
 | `@deepseek-ai/dsh-tool-goal` | `create_goal`, `get_goal`, `update_goal` | `ctx.tools`, `ctx.agents`, `ctx.goals`, `ctx.systemPrompt`, `a calling Agent in an authorized open turn` | `tool/call`, `goal/change for mutations`, `tool/result` | - | create, edit, pause, and resume require direct-human root authority; complete and blocked also accept the exact current goal round. The default blocked lower bound is three admitted rounds. |
+| `@deepseek-ai/dsh-tool-schedule` | `schedule_create`, `schedule_delete`, `schedule_list` | `ctx.tools`, `ctx.sessions`, `Session persistence`, `a future live root Agent` | `tool/call`, `schedule/change create or delete`, `tool/result` | - | Registered only inside live root Agent scopes created after the opt-in Schedule plugin loads. Version 1 accepts positive safe-integer after_seconds and discloses session-local delivery; management reads and mutations require the shared Session persistence barrier. |
 | `@deepseek-ai/dsh-tool-lsp` | `lsp` | `ctx.tools`, `ctx.lsp`, `ctx.systemPrompt` | `tool/call`, `tool/result` | - | The lsp tool keeps provider selection and language-server subprocesses behind ctx.lsp, so its model-visible schema stays stable across providers. Requires a registered provider (e.g. `@deepseek-ai/dsh-lsp-local`) at runtime; without one, a query returns the structured `LSP_UNAVAILABLE` error rather than changing the schema. |
 | `@deepseek-ai/dsh-tool-ralph` | `ralph` | `ctx.tools`, `ctx.workflows`, `ctx.subagents`, `ctx.systemPrompt`, `a calling Agent (exec.agent parents every fresh round)` | `tool/call`, `tool/result`, `workflow and child session events during execution` | - | A fixed foreground workflow starts one fresh structured child per round; the model selects only the immutable objective and an optional round cap. |
 | `@deepseek-ai/dsh-tool-skill` | `skill` | `ctx.tools`, `ctx.agents`, `ctx.skills` | `tool/call`, `tool/result`, `user/message replacement catalogs via agent.inject()` | - | - |
@@ -826,6 +827,70 @@ Source: [`packages/goal/tool-goal/src/index.ts`](../packages/goal/tool-goal/src/
 
 create, edit, pause, and resume require direct-human root authority; complete and blocked also accept the exact current goal round. The default blocked lower bound is three admitted rounds.
 
+## `@deepseek-ai/dsh-tool-schedule`
+
+### `schedule_create`
+
+Create one reminder in the current session. v1 accepts only a non-empty prompt and a positive safe-integer after_seconds delay. Delivery is session-local: the reminder runs on time only while this session is live and otherwise becomes overdue until the session is resumed.
+
+```json
+{
+  "type": "object",
+  "properties": {
+    "prompt": {
+      "type": "string",
+      "description": "Reminder content to present when the target becomes due."
+    },
+    "after_seconds": {
+      "type": "number",
+      "description": "Positive safe-integer delay in seconds."
+    }
+  },
+  "required": [
+    "prompt",
+    "after_seconds"
+  ]
+}
+```
+
+Source: [`packages/schedule/tool-schedule/src/tools.ts`](../packages/schedule/tool-schedule/src/tools.ts)
+
+### `schedule_delete`
+
+Delete one active reminder in the current session by the exact id returned by schedule_create or schedule_list. Unknown or already-finished ids return deleted false.
+
+```json
+{
+  "type": "object",
+  "properties": {
+    "id": {
+      "type": "string",
+      "description": "Exact session-local schedule id."
+    }
+  },
+  "required": [
+    "id"
+  ]
+}
+```
+
+Source: [`packages/schedule/tool-schedule/src/tools.ts`](../packages/schedule/tool-schedule/src/tools.ts)
+
+### `schedule_list`
+
+List every active reminder in the current session in creation order, including its exact id, UTC target, scheduled or overdue state, and session-local delivery mode.
+
+```json
+{
+  "type": "object",
+  "properties": {}
+}
+```
+
+Source: [`packages/schedule/tool-schedule/src/tools.ts`](../packages/schedule/tool-schedule/src/tools.ts)
+
+Registered only inside live root Agent scopes created after the opt-in Schedule plugin loads. Version 1 accepts positive safe-integer after_seconds and discloses session-local delivery; management reads and mutations require the shared Session persistence barrier.
+
 ## `@deepseek-ai/dsh-tool-lsp`
 
 ### `lsp`