docs: initialize project wiki from production hardening session

12 pages covering architecture, findings, and metrics from the
rotatingMachine + machineGroupControl hardening work:

- Overview: node inventory, what works/doesn't, current scale
- Architecture: 3D pump curves, group optimization algorithm
- Findings: BEP-Gravitation proof (0.1% of optimum), NCog behavior,
  curve non-convexity, pump switching stability
- Metrics: test counts, power comparison table, performance numbers
- Knowledge graph: structured YAML with all data points and provenance
- Session log: 2026-04-07 production hardening
- Tools: query.py, search.sh, lint.sh

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

wiki/tools/lint.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+# Wiki health check — find issues
+# Usage: ./wiki/tools/lint.sh
+
+WIKI_DIR="$(dirname "$(dirname "$(readlink -f "$0")")")"
+
+echo "=== Wiki Health Check ==="
+echo ""
+
+echo "-- Page count --"
+find "$WIKI_DIR" -name "*.md" -not -path "*/tools/*" | wc -l
+echo " total pages"
+echo ""
+
+echo "-- Orphans (not linked from other pages) --"
+for f in $(find "$WIKI_DIR" -name "*.md" -not -name "index.md" -not -name "log.md" -not -name "SCHEMA.md" -not -path "*/tools/*"); do
+    basename=$(basename "$f" .md)
+    refs=$(grep -rl --include="*.md" "$basename" "$WIKI_DIR" 2>/dev/null | grep -v "$f" | wc -l)
+    if [ "$refs" -eq 0 ]; then
+        echo "  ORPHAN: $f"
+    fi
+done
+echo ""
+
+echo "-- Status distribution --"
+for status in proven disproven evolving speculative; do
+    count=$(grep -rl "status: $status" "$WIKI_DIR" --include="*.md" 2>/dev/null | wc -l)
+    echo "  $status: $count"
+done
+echo ""
+
+echo "-- Pages missing frontmatter --"
+for f in $(find "$WIKI_DIR" -name "*.md" -not -name "SCHEMA.md" -not -path "*/tools/*"); do
+    if ! head -1 "$f" | grep -q "^---"; then
+        echo "  NO FRONTMATTER: $f"
+    fi
+done
+echo ""
+
+echo "-- Index completeness --"
+indexed=$(grep -c '\[.*\](.*\.md)' "$WIKI_DIR/index.md" 2>/dev/null)
+total=$(find "$WIKI_DIR" -name "*.md" -not -name "index.md" -not -name "log.md" -not -name "SCHEMA.md" -not -path "*/tools/*" | wc -l)
+echo "  Indexed: $indexed / Total: $total"
+echo ""
+
+echo "=== Done ==="