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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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6
packages/coding-agent/src/core/compaction/branch-summarization.ts
View file

@ -12,7 +12,7 @@ import {
convertToLlm,
createBranchSummaryMessage,
createCompactionSummaryMessage,
createHookMessage,
createCustomMessage,
} from "../messages.js";
import type { ReadonlySessionManager, SessionEntry } from "../session-manager.js";
import { estimateTokens } from "./compaction.js";
@ -147,7 +147,7 @@ function getMessageFromEntry(entry: SessionEntry): AgentMessage | undefined {
return entry.message;
case "custom_message":
return createHookMessage(entry.customType, entry.content, entry.display, entry.details, entry.timestamp);
return createCustomMessage(entry.customType, entry.content, entry.display, entry.details, entry.timestamp);
case "branch_summary":
return createBranchSummaryMessage(entry.summary, entry.fromId, entry.timestamp);
@ -184,7 +184,7 @@ export function prepareBranchEntries(entries: SessionEntry[], tokenBudget: numbe
// First pass: collect file ops from ALL entries (even if they don't fit in token budget)
// This ensures we capture cumulative file tracking from nested branch summaries
// Only extract from pi-generated summaries (fromHook !== true), not hook-generated ones
// Only extract from pi-generated summaries (fromHook !== true), not extension-generated ones
for (const entry of entries) {
if (entry.type === "branch_summary" && !entry.fromHook && entry.details) {
const details = entry.details as BranchSummaryDetails;