Get Anything Done

Read `STATE.md` and `ROADMAP.md` from every registered `[[planning.roots]]` entry and write MDX equivalents to the configured `docs_sink`. The sink is NEVER the source — source files in `.planning/` are never modified.

Load config:
```
gad-tools config-get planning 2>/dev/null
```
Also parse --sink <path> from $ARGUMENTS to override docs_sink.

Validate sink:

If docs_sink is not configured and --sink not provided, show error:

No docs_sink configured. Set docs_sink in planning-config.toml or pass --sink <path>.

For each root: a. Read <root.path>/<root.planningDir>/STATE.md b. Read <root.path>/<root.planningDir>/ROADMAP.md c. Write to <sink>/<root.id>/STATE.mdx and <sink>/<root.id>/ROADMAP.mdx

MDX transformation:
- Add frontmatter header:
```
---
title: <root.id> — Planning State
description: Auto-compiled from <root.path>/<root.planningDir>/STATE.md
generated: <ISO date>
source: <root.path>/<root.planningDir>/STATE.md
---
```
- Preserve all Markdown content verbatim below the frontmatter
- Replace relative links ./phases/ → <sink>/<root.id>/phases/
Copy phase subdirs (if they exist): For each <root.planningDir>/phases/ directory, compile each phase's PLAN.md, SUMMARY.md, KICKOFF.md → .mdx equivalents in <sink>/<root.id>/phases/<phase>/.

Summary:

✓ Compiled 3 roots → apps/portfolio/content/docs/planning/
  global    → STATE.mdx, ROADMAP.mdx, 8 phase files
  grime-time → STATE.mdx, ROADMAP.mdx, 4 phase files
  gad       → STATE.mdx, ROADMAP.mdx (no phases yet)

- Never modify source `.planning/` files - Overwrite existing sink files (sink is always rebuilt from source) - Create sink directories as needed with `mkdir -p` - Skip roots where STATE.md or ROADMAP.md don't exist; log a warning

gad:docs-compile