SkillCheck validator, Cursor exports, and per-agent installers (#27)

Three more learnings from alirezarezvani/claude-skills, applied:

1. SkillCheck validator (scripts/skillcheck.mjs) — validates every SKILL.md
   against the authoring standard (frontmatter, name/folder match, trigger +
   produces clauses, required headings) plus tier referential integrity.
   Errors fail CI; --strict fails on warnings too. New skillcheck.yml workflow
   and a SkillCheck status badge in the README. Current: 0 errors / 14 advisory
   warnings across 172 skills.

2. Cursor export platform — build-exports.mjs now generates
   exports/cursor/<bundle>/<skill>/<skill>.mdc rule files. The PLATFORMS
   registry now supports per-skill filenames (file as a function).

3. Per-agent installers — scripts/install.sh unifies install for
   claude/hermes/codex/openclaw/cursor (--link, --target, --dry-run, --list).
   Curl-able one-liners codex-install.sh, openclaw-install.sh, and
   cursor-install.sh clone the library and install in a single command.

README documents the one-line installs and Cursor exports; CHANGELOG and the
authoring standard updated.


Claude-Session: https://claude.ai/code/session_016JWn5jRD5tcEFKrubjQ6Px

Co-authored-by: Claude <noreply@anthropic.com>

exports/cursor/pm-planning/rice-impact-matrix/rice-impact-matrix.mdc

@@ -0,0 +1,71 @@
+---
+description: "Scores features using both RICE and strategic alignment for nuanced prioritisation. Use when asked to prioritise features, build a priority matrix, combine quantitative scoring with strategic fit, or decide what to build next with multiple competing initiatives. Produces a scored priority matrix with RICE scores, strategic alignment ratings, quadrant placement, and sequencing recommendations."
+globs:
+alwaysApply: false
+---
+
+# RICE + Strategic Alignment Skill
+
+Produce a prioritisation output that balances quantitative RICE scoring with qualitative strategic fit — because the highest RICE score isn't always the right next bet.
+
+## Required Inputs
+
+Ask the user for these if not provided:
+- **List of initiatives or features to prioritise** (names and brief descriptions)
+- **Current strategic priorities or OKRs** (needed to rate strategic alignment)
+- **Reach estimates** (users affected per quarter — even rough estimates work)
+- **Effort estimates** (person-months — from engineering if available)
+- **Quarter or planning period**
+
+## Two-Stage Process
+
+### Stage 1: RICE Scoring
+- Reach: Users affected per quarter
+- Impact: 3/2/1/0.5/0.25 scale
+- Confidence: 100% / 80% / 50%
+- Effort: Person-months
+- RICE = (R × I × C) / E
+
+### Stage 2: Strategic Alignment Score
+Rate each initiative against your current strategic priorities (provided as input):
+- Directly supports top OKR: +3
+- Supports secondary OKR: +2
+- Neutral: +1
+- Contradicts strategic direction: -1
+
+### Final Priority Score
+Combined Score = RICE Score + (Strategic Alignment × 10)
+
+**Validate** — Flag any initiative where RICE score and strategic alignment conflict sharply (e.g., high RICE, low alignment). These require an explicit team conversation before sequencing.
+
+## Output Structure
+
+### Priority Matrix — [Quarter]
+| Initiative | RICE Score | Strategic Alignment | Combined Score | Quadrant | Recommendation |
+|------------|------------|--------------------|--------------------|----------|----------------|
+| [name] | [score] | [score] | [combined] | [Now/Next/Later/Drop] | [action] |
+
+#### Quadrant Definitions
+- **Now:** High RICE + High Strategic Alignment → Build this quarter
+- **Next:** High RICE + Lower Alignment → Queue for next quarter
+- **Later:** Lower RICE + High Alignment → Revisit when capacity allows
+- **Drop:** Low RICE + Low Alignment → Remove from backlog
+
+#### Recommendations
+[Top 5 initiatives with rationale for sequencing]
+
+## Quality Checks
+
+- [ ] All RICE components have an estimate (even if low confidence — flag those)
+- [ ] Strategic alignment is rated against specific OKRs, not general "feels strategic"
+- [ ] Conflicts between RICE rank and strategic alignment are explicitly flagged
+- [ ] "Drop" recommendations are specific — not just "low priority, deprioritise"
+- [ ] Confidence levels on estimates are noted where weak (drives the 50% confidence flag)
+
+## Anti-Patterns
+
+- [ ] Do not treat the combined score as a definitive ranking — use it to structure a conversation, not replace one
+- [ ] Do not rate strategic alignment as "high" because an initiative feels important without mapping it to a specific OKR
+- [ ] Do not place all initiatives in the "Now" quadrant — a matrix with no "Drop" recommendations is not credible
+- [ ] Do not ignore the conflict flag when RICE rank and strategic alignment sharply diverge
+- [ ] Do not accept 100% confidence on estimates that have not been validated with data