upgrade: adopt V8.12.0-dev.1 (V8.11 unified professional UI + V8.12 workflow usability)

- Overlay 26 changed files from SiteForge_Enterprise_V8_12 (UI layer only:
  professional-ui.js/css, workspace/factory-v2/operations/editor templates,
  +2 test files, compose/ci/scripts/docs)
- Re-apply v8_workflows type-mapping fix (类型/分类) lost in upgrade
- Pin compose project name to siteforge-v8-10 so existing data volumes
  (hesupipe site 483295c29ea0, 193 entries) keep attached
- Drop stray .s10_* state files; ignore .s10_*/.sf_*/.s87_* patterns
- Plan/spec revisions per plan-review round 1 (icons are new design,
  real test assertions, recorded deviations)

Tests: 226 passed / 1 env-only failure (test needs node binary in PATH,
absent in python:3.12-slim container; host node v24 --check all 9 JS OK)

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

scripts/verify_release.py

@@ -6,7 +6,7 @@ import sys
 ROOT=Path(__file__).resolve().parent.parent
 sys.path.insert(0,str(ROOT))
 from app.version import VERSION
-assert VERSION=='8.10.0-dev.1'
+assert VERSION=='8.12.0-dev.1'
 api=(ROOT/'app'/'main.py').read_text(encoding='utf-8')
 assert 'return builder.build(' not in api, 'A synchronous request-thread build has reappeared'
 assert "@app.post('/api/sites/{site_id}/builds', status_code=202)" in api