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Merge hooks and custom-tools into unified extensions system (#454)

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Breaking changes:
- Settings: 'hooks' and 'customTools' arrays replaced with 'extensions'
- CLI: '--hook' and '--tool' flags replaced with '--extension' / '-e'
- API: HookMessage renamed to CustomMessage, role 'hookMessage' to 'custom'
- API: FileSlashCommand renamed to PromptTemplate
- API: discoverSlashCommands() renamed to discoverPromptTemplates()
- Directories: commands/ renamed to prompts/ for prompt templates

Migration:
- Session version bumped to 3 (auto-migrates v2 sessions)
- Old 'hookMessage' role entries converted to 'custom'

Structural changes:
- src/core/hooks/ and src/core/custom-tools/ merged into src/core/extensions/
- src/core/slash-commands.ts renamed to src/core/prompt-templates.ts
- examples/hooks/ and examples/custom-tools/ merged into examples/extensions/
- docs/hooks.md and docs/custom-tools.md merged into docs/extensions.md

New test coverage:
- test/extensions-runner.test.ts (10 tests)
- test/extensions-discovery.test.ts (26 tests)
- test/prompt-templates.test.ts
This commit is contained in:
Mario Zechner
2026-01-05 01:43:35 +01:00
parent 9794868b38
commit c6fc084534
112 changed files with 2842 additions and 6747 deletions
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8
packages/coding-agent/docs/rpc.md
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@@ -52,9 +52,9 @@ With images:
If the agent is streaming and no `streamingBehavior` is specified, the command returns an error.
**Hook commands**: If the message is a hook command (e.g., `/mycommand`), it executes immediately even during streaming. Hook commands manage their own LLM interaction via `pi.sendMessage()`.
**Extension commands**: If the message is a hook command (e.g., `/mycommand`), it executes immediately even during streaming. Extension commands manage their own LLM interaction via `pi.sendMessage()`.
**Slash commands**: File-based slash commands (from `.md` files) are expanded before sending/queueing.
**Prompt templates**: File-based prompt templates (from `.md` files) are expanded before sending/queueing.
Response:
```json
@@ -65,7 +65,7 @@ The `images` field is optional. Each image uses `ImageContent` format with base6
#### steer
Queue a steering message to interrupt the agent mid-run. Delivered after current tool execution, remaining tools are skipped. File-based slash commands are expanded. Hook commands are not allowed (use `prompt` instead).
Queue a steering message to interrupt the agent mid-run. Delivered after current tool execution, remaining tools are skipped. File-based prompt templates are expanded. Extension commands are not allowed (use `prompt` instead).
```json
{"type": "steer", "message": "Stop and do this instead"}
@@ -80,7 +80,7 @@ See [set_steering_mode](#set_steering_mode) for controlling how steering message
#### follow_up
Queue a follow-up message to be processed after the agent finishes. Delivered only when agent has no more tool calls or steering messages. File-based slash commands are expanded. Hook commands are not allowed (use `prompt` instead).
Queue a follow-up message to be processed after the agent finishes. Delivered only when agent has no more tool calls or steering messages. File-based prompt templates are expanded. Extension commands are not allowed (use `prompt` instead).
```json
{"type": "follow_up", "message": "After you're done, also do this"}