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-cross/press-release/press-release.md

@@ -0,0 +1,82 @@
+# Press Release Skill
+
+Writes press releases that journalists actually read — structured around the news angle, not the desire to promote.
+
+## Required Inputs
+- **The news** (what is actually happening — be specific)
+- **Company name**
+- **Date of announcement / embargo date**
+- **Key quote** (from which executive and approximately what they want to say)
+- **Why this matters** (to the reader, not the company)
+- **Target media** (trade / national / local / consumer / investor)
+- **Media contact details**
+
+## Output Structure
+
+---
+
+FOR IMMEDIATE RELEASE / EMBARGOED UNTIL: [Date and time]
+
+---
+
+# [Headline — active verb, specific news, under 10 words]
+## [Subheadline — the so-what in one sentence, adds context not repetition]
+
+**[City, Date]** — [Opening paragraph: Who, What, When, Where, Why in 2-3 sentences. A journalist should be able to run this paragraph alone. No background, no context, no company history.]
+
+[Second paragraph: the significance. Why does this matter? What does it mean for customers or the industry?]
+
+[Third paragraph: quote from executive. Human and specific. Not a restatement of the headline.]
+
+"[Quote text — specific, adds something the facts do not say]," said [Name], [Title] at [Company]. "[Second sentence extending the thought]."
+
+[Fourth paragraph: supporting detail — data, customer names with permission, additional context]
+
+[Fifth paragraph optional: what happens next, when it goes live, what people can do]
+
+---
+
+ENDS
+
+---
+
+**Notes to editors:**
+
+**About [Company]**
+[Boilerplate: 3-4 sentences. What the company does, when founded, where based, key facts. Factual not promotional.]
+
+**Media contact:**
+[Name] | [Title] | [Email] | [Phone] | [Hours/timezone]
+
+---
+
+## Headline Rules
+- Active voice: "Company launches X" not "X is launched by Company"
+- Specific: "raises 5M" not "secures significant investment"
+- Under 10 words
+- Never start with the company name — lead with the news
+
+## Journalist Test
+Would a journalist care? Is the headline the full story? Is there a human angle? Is the quote something a human would say? Can the first paragraph stand alone?
+
+## Quality Checks
+
+- [ ] Headline uses active voice and is under 10 words
+- [ ] First paragraph stands alone as the complete story
+- [ ] Quote adds something the facts don't say (not a restatement)
+- [ ] Boilerplate is factual, not promotional
+- [ ] Embargo date and media contact are included
+
+## Anti-Patterns
+
+- [ ] Do not bury the news — the most important information must appear in the first paragraph (inverted pyramid)
+- [ ] Do not use promotional language or superlatives — press releases must read as news, not advertising copy
+- [ ] Do not omit the boilerplate — every press release needs the standard "About [Company]" paragraph at the end
+- [ ] Do not forget the embargo date and media contact — journalists need both to use the release
+- [ ] Do not write a headline longer than 12 words — it must be scannable and specific
+
+## Example Trigger Phrases
+- "Write a press release announcing [news]"
+- "Draft a media statement about [event]"
+- "We are launching [product] — write the press release"
+- "Turn this announcement into a press release: [paste notes]"