feat: add /resume command and use Unicode emoji (v0.1.13)

[t2tx]

Ports two fixes from the GitLab sibling repo.

1. /resume — reconnect a thread to a past Claude session

Iris keeps the thread⇄session map in memory, so a restart (e.g. an update) drops it and the next message starts a fresh session. Claude's session JSONL files survive, so /resume lists them and reattaches.

• claude-sessions.ts (new): read ~/.claude/projects/<encoded-cwd>/*.jsonl; projectDir maps cwd → projects path (/ → -)
• session.ts: setResumeId() applies --resume on the next spawn (resumeOverrides map; ensure resolves live entry > resume override)
• commands.ts: /resume (list recent sessions) and /resume <id> (reconnect, prefix match)
• /clear kills the process but never deletes the JSONL, so /resume still works afterwards

2. Unicode emoji

Replace Slack shortcodes (:green_circle: etc.) with real Unicode (🟢🔴🔄🧹🏠➡️⚠️✅❌🔒✍️🛠️). Shortcodes were not converted when sent via chat.postMessage (e.g. /sessions status dots rendered as literal text).

Verification

Both verified on the GitLab sibling repo (v0.1.9 / v0.1.10) on Iris-dev: /resume list → reconnect → context restored after a restart; /sessions shows 🟢. pnpm verify green (94 tests). version 0.1.12 → 0.1.13.

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features

  • Added /resume command to list and resume past Claude sessions by session ID.

• Style

  • Updated emoji formatting across error messages, permission confirmations, and progress indicators for improved compatibility.

• Tests

  • Added test coverage for session management and resume functionality.

• Chores

  • Version bumped to 0.1.13.

[t2tx]

@coderabbitai review

[t2tx]

Merging without a CodeRabbit review: CodeRabbit did not run (likely the free-tier 4 reviews/hour rate limit after #15/#16). Required checks (verify/coverage/CodeQL) all pass, and this is a straight port of code already verified live on the GitLab sibling repo (v0.1.9 emoji / v0.1.10 /resume).

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

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Run ID: 3e4ffdcd-be8a-4f97-ba90-93c305e8fe6a

📥 Commits

Reviewing files that changed from the base of the PR and between 1b17c4b and 7af65ee.

📒 Files selected for processing (10)

• package.json
• src/claude-sessions.test.ts
• src/claude-sessions.ts
• src/commands.test.ts
• src/commands.ts
• src/format.ts
• src/index.ts
• src/permission.ts
• src/session.ts
• src/stream-buffer.ts

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Walkthrough

Adds a /resume slash command that reads Claude Code's persisted JSONL session files via a new claude-sessions.ts module, extends SessionManager with setResumeId to force respawn with --resume, and wires the command handler into commands.ts. Separately normalizes Slack emoji aliases to unicode across several user-facing message strings and bumps the package version to 0.1.13.

Changes

/resume Command Feature

Layer / File(s)	Summary
ClaudeSession module and JSONL parser src/claude-sessions.ts, src/claude-sessions.test.ts	Defines ClaudeSession interface, projectDir path encoder, internal firstUserPrompt JSONL parser (handles string and array content, skips tag-prefixed lines), and listClaudeSessions enumerator sorted by mtimeMs. Tests cover path encoding, empty directory, and single-file JSONL session parsing.
SessionManager resume override src/session.ts	Adds resumeOverrides map and setResumeId(sessionKey, sessionId) method; closes any live process and removes its entry so the next message spawns with --resume. ensure() reads the pending override and clears it after use.
/resume command wiring and handler src/commands.ts, src/commands.test.ts	Imports listClaudeSessions, registers cmdResume in COMMANDS, adds /resume and /resume <id> to /help output, and implements the handler: lists recent sessions when called with no argument, or matches by id prefix and calls setResumeId. Tests cover the stub, help text, no-sessions response, and unknown-id error.

Emoji Normalization and Version Bump

Layer / File(s)	Summary
Unicode emoji replacements and version bump src/commands.ts, src/format.ts, src/index.ts, src/permission.ts, src/stream-buffer.ts, package.json	Replaces Slack alias tokens (:lock:, :warning:, :white_check_mark:, :x:, :hammer_and_wrench:, :writing_hand:) with direct unicode emoji in cmdSessions, cmdRestart, cmdClear, cmdSwitch, toolProgressLine, onError, permission click responses, permissionBlocks, and TYPING_INDICATOR. Bumps version to 0.1.13.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feature/resume-and-emoji

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