tokmd-analysis-grid 1.9.0

Analysis preset and feature-gate metadata for tokmd analysis orchestration.
Documentation
# tokmd-analysis-grid

Preset and feature-gate metadata for analysis orchestration.

## Problem
You need one source of truth for preset composition and feature warnings.

## What it gives you
- `PresetKind`, `PRESET_KINDS`
- `PresetPlan`, `PRESET_GRID`
- `preset_plan_for`, `preset_plan_for_name`
- `DisabledFeature`

## Integration notes
- Pure data and serialization, with deterministic ordering at the type boundary.
- Central source of preset plans and disabled-feature warnings.
- `halstead` depends on `content` and `walk`; the other preset features are independent gates.

## Go deeper
- Tutorial: [Tutorial]../../docs/tutorial.md
- How-to: [Recipes]../../docs/recipes.md
- Reference: [Architecture]../../docs/architecture.md, [Schema]../../docs/SCHEMA.md, [Schema JSON]../../docs/schema.json
- Explanation: [Explanation]../../docs/explanation.md