Windsurf + Aider targets, MCP server, and demo placement (#33)

Broadens both reach (more tools) and content types (an MCP server), continuing
the multi-platform story.

Windsurf + Aider:
- build-exports.mjs gains two platforms: exports/windsurf/*.md (workspace rules,
  trigger: model_decision) and exports/aider/*.md (conventions for `aider --read`).
  Now 5 platforms (ChatGPT, Gemini, Cursor, Windsurf, Aider).
- install.sh + bin/cli.mjs install both (windsurf -> .windsurf/rules, aider ->
  .aider/skills with a --read hint); generated README index is excluded from copies.
- One-line windsurf-install.sh / aider-install.sh wrappers for parity.

MCP server (new content type):
- mcp/server.mjs — zero-dependency stdio MCP server exposing list_skills,
  search_skills, get_skill. Published as a second bin (pm-claude-skills-mcp).
  Logs to stderr; reads bundled skills/ at startup. mcp/README.md documents
  client config.

Also: README hero "See it in action" demo placement (ready to swap in a GIF;
recording guide in web/docs-assets/README.md), Works-With table + exports +
install docs updated, CHANGELOG Unreleased. package.json files/bin updated.


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

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

exports/aider/pm-planning/rice-impact-matrix/rice-impact-matrix.md

@@ -0,0 +1,65 @@
+# 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