v0.3.0: Publication-ready release with blog site, paper update, and polish

Release prep:
- Version bump to 0.3.0 (pyproject.toml, cli.py)
- Rewrite README.md with current stats (475 drafts, 713 authors, 501 ideas)
- Add CONTRIBUTING.md with dev setup and code conventions

Blog site:
- Add scripts/build-site.py (markdown → HTML with clean CSS, dark mode, nav)
- Generate static site in docs/blog/ (10 pages)
- Ready for GitHub Pages deployment

Academic paper (paper/main.tex):
- Update all counts: 474→475 drafts, 557→710 authors, 1907→462 ideas, 11→12 gaps
- Add false-positive filtering methodology (113 excluded, 361 relevant)
- Add cross-org convergence analysis (132 ideas, 33% rate)
- Add GDPR compliance gap to gap table
- Add LLM-as-judge caveats to rating methodology and limitations
- Add FIPA, IEEE P3394, W3C WoT to related work with bibliography entries
- Fix safety ratio to show monthly variation (1.5:1 to 21:1)

Pipeline:
- Fetch 1 new draft (475 total), 3 new authors (713 total)
- Fix 16 ruff lint errors across test files
- All 106 tests pass

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

src/webui/templates/drafts.html

@@ -53,11 +53,26 @@
         color: #4ade80;
         border: 1px solid rgba(34, 197, 94, 0.3);
     }
-    .source-generated {
+    .source-etsi {
+        background: rgba(251, 146, 60, 0.15);
+        color: #fb923c;
+        border: 1px solid rgba(251, 146, 60, 0.3);
+    }
+    .source-itu {
+        background: rgba(244, 114, 182, 0.15);
+        color: #f472b6;
+        border: 1px solid rgba(244, 114, 182, 0.3);
+    }
+    .source-iso {
         background: rgba(168, 85, 247, 0.15);
         color: #c084fc;
         border: 1px solid rgba(168, 85, 247, 0.3);
     }
+    .source-generated {
+        background: rgba(148, 163, 184, 0.15);
+        color: #94a3b8;
+        border: 1px solid rgba(148, 163, 184, 0.3);
+    }
     .cat-pill {
         display: inline-block;
         padding: 1px 8px;
@@ -162,7 +177,9 @@
                     <option value="">All sources</option>
                     <option value="ietf" {% if current_source == 'ietf' %}selected{% endif %}>IETF</option>
                     <option value="w3c" {% if current_source == 'w3c' %}selected{% endif %}>W3C</option>
-                    <option value="generated" {% if current_source == 'generated' %}selected{% endif %}>Generated</option>
+                    <option value="etsi" {% if current_source == 'etsi' %}selected{% endif %}>ETSI</option>
+                    <option value="itu" {% if current_source == 'itu' %}selected{% endif %}>ITU-T</option>
+                    <option value="iso" {% if current_source == 'iso' %}selected{% endif %}>ISO/IEC</option>
                 </select>
             </div>
             <!-- Sort -->