Feature: shareable redacted session bundles and issue/PR handoff

[slashdevcorpse]

Research-backed TODO

Local-first users still need to move useful run context into public issues, PRs, or teammate handoffs without leaking secrets or machine paths.

Acceptance criteria

• Export a redacted markdown session bundle with prompt, assistant result, selected tool summaries, changed-file list, and validation commands.
• Allow users to generate a GitHub issue or PR description draft from a session.
• Redact environment variables, tokens, absolute private paths, and large raw command output by default.
• Keep user approval required before any GitHub write action.

Public research basis

• OpenHands cloud documents collaboration features and Slack/Jira/Linear integrations.
• Open SWE includes Slack and Linear handoff tools in its curated toolset.
• Continue turns source-controlled AI checks into PR-visible status and suggested-diff workflows.

Non-goals

• No automatic posting by default.
• No hosted sharing service.

Source set

• OpenAI Codex CLI - local terminal coding agent, installer paths, IDE/desktop context.
• OpenHands - local GUI with REST API + SPA, CLI, cloud collaboration/integrations.
• Aider - repo maps, git integration, image/web context, lint/test loops.
• Continue - source-controlled AI checks as markdown agents in CI.
• Open SWE - isolated sandboxes, AGENTS.md context, curated tools, subagents, Slack/Linear handoff.
• Model Context Protocol servers - tool/server registry pattern, filesystem/git/memory/fetch examples, security warnings.
• Open WebUI - responsive/PWA UI, RAG/web browsing, artifact storage, permissions.
• OpenCode - coding-agent modes, plan/build separation, subagent pattern.
• Cline - autonomous coding agent as SDK, IDE extension, and CLI assistant.
• Roo Code - agent-oriented coding workflow inside the editor.

[slashdevcorpse]

Implemented in PR #108 and merged to main. Validation passed: app lint, tests, build, package dry run, packed tarball smoke, CodeQL, CI, GitGuardian, and Cubic.