docs: apply fleet-template (16-artifact scaffold)

Adds missing standard artifacts:
- README.md (if missing)
- AGENTS.md (AI agent contract)
- PLAN.md (current sprint)
- STATUS.md (where we are)
- DEVELOPMENT.md (dev workflow)
- DEPLOYMENT.md (deploy procedure)
- TESTING.md (test strategy)
- DECISIONS.md (ADR index + templates)
- .github/CODEOWNERS
- .github/workflows/ci.yml

Preserves all existing artifacts.

Refs: RugMunchMedia/fleet-template

tests/test_markdown_gen.py

@@ -0,0 +1,46 @@
+"""Tests for markdown generation strategies."""
+
+from markdown_gen import BM25ContentFilter, DefaultMarkdownGenerator, PruningContentFilter
+
+
+def test_pruning_filter_removes_boilerplate() -> None:
+    content = "Welcome\n# Navigation\nHome\nAbout\n## Main Content\nThis is real content.\nFooter\nCopyright 2024"
+    filter_ = PruningContentFilter()
+    result = filter_.filter(content)
+    assert "Navigation" not in result or "Navigation" not in result
+    assert "Main Content" in result
+
+
+def test_pruning_score() -> None:
+    content = "# Title\n## Section\nReal content here.\nFooter"
+    filter_ = PruningContentFilter()
+    score = filter_.score(content)
+    assert "boilerplate_ratio" in score
+    assert "quality" in score
+
+
+def test_bm25_filter() -> None:
+    content = "# Prices\nOur product costs $10.\n# Contact\nCall us at 555-0100.\n# Shipping\nFree shipping over $50."
+    filter_ = BM25ContentFilter(threshold=0.5)
+    result = filter_.filter(content, "product pricing cost")
+    assert "Prices" in result
+    assert "Contact" not in result
+
+
+def test_bm25_no_query() -> None:
+    content = "# Test\nContent"
+    filter_ = BM25ContentFilter()
+    result = filter_.filter(content, "")
+    assert result == content
+
+
+def test_default_generator_raw() -> None:
+    gen = DefaultMarkdownGenerator()
+    result = gen.generate("# Hello\nWorld")
+    assert "raw_markdown" in result
+
+
+def test_default_generator_with_pruning() -> None:
+    gen = DefaultMarkdownGenerator(content_filter=PruningContentFilter())
+    result = gen.generate("# Hello\nWorld\nFooter\nCopyright")
+    assert "fit_markdown" in result