feat(atlassian): implement milestone M1 - scaffold skill and shared runtime

skills/atlassian/cursor/SKILL.md

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+---
+name: atlassian
+description: Interact with Atlassian Cloud Jira and Confluence through a portable task-oriented CLI for search, issue/page edits, comments, transitions, and bounded raw requests.
+---
+
+# Atlassian (Cursor Agent CLI)
+
+Portable Atlassian workflows for Cursor Agent CLI using a shared TypeScript CLI.
+
+## Requirements
+
+- Cursor Agent CLI skill discovery via `.cursor/skills/` or `~/.cursor/skills/`
+- Node.js 20+
+- `pnpm`
+- Atlassian Cloud account access
+- `ATLASSIAN_BASE_URL`
+- `ATLASSIAN_EMAIL`
+- `ATLASSIAN_API_TOKEN`
+
+## First-Time Setup
+
+Repo-local install:
+
+```bash
+mkdir -p .cursor/skills/atlassian
+cp -R skills/atlassian/cursor/* .cursor/skills/atlassian/
+cd .cursor/skills/atlassian/scripts
+pnpm install
+```
+
+Global install:
+
+```bash
+mkdir -p ~/.cursor/skills/atlassian
+cp -R skills/atlassian/cursor/* ~/.cursor/skills/atlassian/
+cd ~/.cursor/skills/atlassian/scripts
+pnpm install
+```
+
+## Prerequisite Check (MANDATORY)
+
+Repo-local form:
+
+```bash
+cursor-agent --version
+cd .cursor/skills/atlassian/scripts
+node -e "require.resolve('commander');require.resolve('dotenv');console.log('OK: runtime dependencies installed')"
+test -n \"$ATLASSIAN_BASE_URL\"
+test -n \"$ATLASSIAN_EMAIL\"
+test -n \"$ATLASSIAN_API_TOKEN\"
+pnpm atlassian health
+```
+
+If any check fails, stop and return:
+
+`Missing dependency/config: atlassian requires installed CLI dependencies and valid Atlassian Cloud credentials. Run setup and configure ATLASSIAN_* env vars, then retry.`
+
+## Supported Commands
+
+- `pnpm atlassian health`
+- `pnpm atlassian jira-search --jql "..."`
+- `pnpm atlassian jira-get --issue ABC-123`
+- `pnpm atlassian jira-create ... [--dry-run]`
+- `pnpm atlassian jira-update ... [--dry-run]`
+- `pnpm atlassian jira-comment ... [--dry-run]`
+- `pnpm atlassian jira-transitions --issue ABC-123`
+- `pnpm atlassian jira-transition ... [--dry-run]`
+- `pnpm atlassian conf-search --query "..."`
+- `pnpm atlassian conf-get --page 12345`
+- `pnpm atlassian conf-create ... [--dry-run]`
+- `pnpm atlassian conf-update ... [--dry-run]`
+- `pnpm atlassian conf-comment ... [--dry-run]`
+- `pnpm atlassian conf-children --page 12345`
+- `pnpm atlassian raw --product jira|confluence --method GET|POST|PUT --path ...`
+
+## Safety Rules
+
+- Prefer JSON output for agent use.
+- Use `--dry-run` before writes unless the user explicitly wants the change applied.
+- Keep `--body-file` inputs within the current workspace.
+- Use `raw` only for user-requested unsupported endpoints.
+- `raw` does not allow `DELETE`.
+
+## Notes
+
+- Cursor discovers this skill from `.cursor/skills/` or `~/.cursor/skills/`.
+- Atlassian Cloud is the supported platform in v1.