feat(lib): bundle MCP servers from .common/lib into factory/lib/

Copies source (no node_modules, dist, .tasks, .wiki, __pycache__) for:
- projects-meta-mcp v2.25.0 (TypeScript/Node)
- wiki-graph v0.3.1 (TypeScript/Node)
- interns-mcp v0.3.3 (Python/FastMCP)

.gitignore: exclude lib build artefacts (node_modules, dist, .venv, __pycache__, *.pyc)
bootstrap.ps1: add MCP build step — npm install+build for TS servers, venv+pip for Python

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/wiki-graph/tests/fixtures/wiki/concepts/a.md

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+# A
+
+Points to [[b]].

lib/wiki-graph/tests/fixtures/wiki/concepts/b.md

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+# B
+
+Points to [[c]].

lib/wiki-graph/tests/fixtures/wiki/concepts/c.md

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+# C
+
+Leaf page, links nowhere.

lib/wiki-graph/tests/fixtures/wiki/concepts/d.md

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+# D
+
+Also points to [[c]] and a placeholder [[<todo-module>]].

lib/wiki-graph/tests/fixtures/wiki/concepts/e.md

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+# E
+
+Orphan: no outgoing links, nobody links here.

lib/wiki-graph/tests/fixtures/wiki/raw/a.md

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+# A (raw provenance copy)
+
+Verbatim ingested doc. Shares basename with concepts/a.md and links [[e]]
+directly — this edge must NOT pollute the canonical graph.

lib/wiki-graph/tests/fixtures/wiki/sources/ghost.md

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+# Ghost source
+
+A source-layer summary page that must not appear as a graph node by default.
+Links [[a]].