Phase 5: Markdown TODO manager

[Copilot]

Implements the full super-ollama todo command tree — ~/TODO.md as source of truth, SQLite as a derived index rebuilt on every write, HTML comment metadata for machine-readable IDs/dates, and AI-assisted prioritisation via the existing engine.

internal/todo

• todo.go — Item/List structs; Parse/Marshal for the canonical format (- [ ] #tag text <!-- id:N created:YYYY-MM-DD -->); AddItem (auto-increment ID), MarkDone (by ID or partial text), FilterByTag, SearchItems, ActiveSummary/FullSummary (prompt injection)
• store.go — OpenStore (schema init), RebuildIndex (full replace in one tx), QueryStore (LIKE search)
• todo_test.go — 16 unit tests covering parse/marshal round-trip, add, done, filter, search, tag extraction

internal/config

Added TodoPath (default ~/TODO.md) and DBPath (default ~/.super-ollama/data.db) to Config; applyDefaults handles ~ expansion.

cmd/super-ollama/todo.go

Subcommand	Behaviour
add <text>	Append active item, auto-assign ID
done <id|text>	Match by integer ID then substring; stamp done: date
list [--all] [--tag name]	Filter active (or all) by optional tag
search <query>	Case-insensitive substring across active + done
suggest	LLM ranks active items by urgency
triage	LLM proposes full reordering with rationale

suggest and triage build focused prompts from ActiveSummary/FullSummary and stream through the existing engine.Generate path, respecting --model and config default_model.

Example file output:

# TODO

## Active

- [ ] #work finish slide deck for Monday  <!-- id:1 created:2026-04-11 -->
- [ ] #personal call dentist  <!-- id:2 created:2026-04-11 -->

## Done

- [x] #work send Q3 report  <!-- id:0 created:2026-04-10 done:2026-04-11 -->