#11440: fix: preserve multi-line input for skill commands

## Bug Skill commands with multi-line input lose everything after the first newline. **Steps to reproduce:** 1. Configure a skill command (e.g. `/my_skill`) 2. Send a message with the command and multi-line content: ``` /my_skill FEEDBACK BELOW: First item to review Second item to review ``` 3. The agent only receives `"FEEDBACK BELOW:"` as user input. All subsequent lines are dropped. **Expected:** Full multi-line content is preserved as skill command args. ## Root Cause `normalizeCommandBody()` in `commands-registry.ts` truncates at the first newline: ```typescript const newline = trimmed.indexOf("\n"); const singleLine = newline === -1 ? trimmed : trimmed.slice(0, newline).trim(); ``` This is correct for built-in commands (`/status`, `/reset`, etc.) but breaks skill commands that accept rich multi-line input. The downstream `resolveSkillCommandInvocation()` regex already uses `[\s\S]+` to handle newlines, but the input is truncated before it reaches that function. ## Fix Rather than modifying `normalizeCommandBody()` (which would risk breaking built-in commands), the fix reconstructs the skill command body in `get-reply-inline-actions.ts` by: 1. Taking the normalised first line from `commandBodyNormalized` (with bot mentions stripped for groups) 2. Grafting the remaining lines from `rawBodyNormalized` back onto it This preserves both normalisation (bot mention removal in groups) and multi-line content. Zero changes to `normalizeCommandBody` means zero risk to existing built-in command handling. **Files changed:** 2 (`get-reply-inline-actions.ts` + `skill-commands.test.ts`) ## Tests Added - Multi-line args with direct command syntax - Multi-line args with `/skill` syntax - Existing single-line tests unaffected --- ## Prompt Request If you prefer to implement this differently: ``` Fix a bug where skill commands with multi-line input lose everything after the first newline. normalizeCommandBody() in src/auto-reply/commands-registry.ts truncates at the first \n. This is correct for built-in commands but breaks skill commands. Key files: - src/auto-reply/commands-registry.ts - normalizeCommandBody() truncates at \n (~line 375) - src/auto-reply/reply/get-reply-inline-actions.ts - calls resolveSkillCommandInvocation (~line 153) - src/auto-reply/skill-commands.ts - resolveSkillCommandInvocation() already handles \n via [\s\S]+ - src/auto-reply/reply/commands-context.ts - buildCommandContext() sets rawBodyNormalized (full) and commandBodyNormalized (truncated) - src/auto-reply/reply/commands-types.ts - CommandContext type Fix: in get-reply-inline-actions.ts, reconstruct a skill-specific body combining the normalised first line (bot mentions stripped) with remaining lines from rawBodyNormalized. Avoids changing normalizeCommandBody() (zero risk to built-in commands). Add tests in src/auto-reply/skill-commands.test.ts for multi-line args. Reproduce: /some_skill first line\nsecond line\nthird line Expected args: "first line\nsecond line\nthird line" Actual (before fix): "first line" (rest dropped) ```