docs: add SESSION-GUIDE.md and SESSION-LOG.md for AI session handoffs

SESSION-GUIDE.md: start/resume prompts, git workflow, file update rules
SESSION-LOG.md: session history log (newest first)

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

SESSION-LOG.md

@@ -0,0 +1,31 @@
+# ArchiTools — Session Log
+
+> Newest sessions first. Each AI session appends an entry at the top.
+
+---
+
+## Session — 2026-02-18 (Claude Opus 4.6)
+
+### Completed
+- **Registratura Legal Deadline Tracking** — Full implementation:
+  - 9 new files: working-days.ts (Romanian holidays + Orthodox Easter), deadline-catalog.ts (16 deadline types), deadline-service.ts, use-deadline-filters.ts, deadline-card.tsx, deadline-add-dialog.tsx, deadline-resolve-dialog.tsx, deadline-table.tsx, deadline-dashboard.tsx
+  - 6 modified files: types.ts, use-registry.ts, registratura-module.tsx (tabbed), registry-entry-form.tsx (inline deadlines), registry-table.tsx (clock badge), index.ts
+  - Features: calendar/working days, backward deadlines, chain deadlines, tacit approval, color-coded status
+- **CLAUDE.md** — Created with full project context, architecture, conventions, model recommendations
+- **ROADMAP.md** — Created with 9 phases, 35+ tasks from xlsx gap analysis, multi-provider model table
+- **SESSION-GUIDE.md** — Created with start/resume prompts, git workflow, file update rules
+
+### Commits
+- `bb01268` feat(registratura): add legal deadline tracking system (Termene Legale)
+- `d6a5852` docs: add ROADMAP.md with detailed future task plan
+- `b1df15b` docs: rewrite ROADMAP.md with complete xlsx gap analysis + multi-model recommendations
+- (this session) docs: add SESSION-GUIDE.md + SESSION-LOG.md
+
+### Notes
+- Build passes with zero errors
+- Dev server on localhost:3000 shows tabs correctly
+- Production at 10.10.10.166:3000 requires Portainer redeploy after push
+- The `app_modules_overview.xlsx` is in the repo root but not committed (it's a reference file)
+- No tasks from ROADMAP.md Phase 1+ have been started yet — next session should begin with task 1.01
+
+---