Summary

• Repairs fix(commands): preserve multiline slash skill args #81305 to preserve multiline payloads for /skill and direct skill command invocations without expanding multiline behavior to unrelated slash aliases.
• Keeps command-head normalization intact for aliases, colon syntax, and Telegram-style bot mentions.
• Carries forward @web3blind's reproduction and implementation work from Regression: multiline slash skill arguments are truncated after first newline #79155 and fix(commands): preserve multiline slash skill args #81305.

Validation

• pnpm test:serial src/auto-reply/commands-registry.test.ts src/auto-reply/skill-commands.test.ts src/auto-reply/reply/commands-context.test.ts src/auto-reply/reply/session.test.ts src/auto-reply/reply/get-reply.fast-path.test.ts
• pnpm check:changed
• Codex /review must pass cleanly before merge.

Fixes #79155.
Source PR: #81305

Clownfish 🐠 replacement reef notes:

• Cluster: gitcrawl-301-autonomous-terminal-gap
• Source PRs: fix(commands): preserve multiline slash skill args #81305
• Credit: Repair the existing contributor branch for fix(commands): preserve multiline slash skill args #81305; preserve @web3blind as the source author for the issue reproduction and PR implementation.; PR body and any changelog note should mention that the fix follows Regression: multiline slash skill arguments are truncated after first newline #79155 and fix(commands): preserve multiline slash skill args #81305 rather than presenting it as unrelated Clownfish work.; Do not open a separate issue-fix PR while fix(commands): preserve multiline slash skill args #81305 remains the active editable canonical branch unless repair fails with a concrete branch blocker.
• Validation: pnpm test:serial src/auto-reply/commands-registry.test.ts src/auto-reply/skill-commands.test.ts src/auto-reply/reply/commands-context.test.ts src/auto-reply/reply/session.test.ts src/auto-reply/reply/get-reply.fast-path.test.ts; pnpm check:changed
• Repair fallback: source PR fix(commands): preserve multiline slash skill args #81305 is a fork branch requiring rebase; use replacement branch because GitHub App pushes to contributor forks can be rejected when rebased upstream history includes workflow files

fish notes: model gpt-5.5, reasoning medium; reviewed against 226b985.