Add timesheet / AI-audit time tracking (wraps account.analytic.line)

- fl.timesheet via delegation inheritance on account.analytic.line so billable
  hours flow through standard Odoo Accounting; duration_hours maps to unit_amount
- Fields: case_id, employee_id, is_billable, ai_agent, duration_hours, computed
  hourly_rate/billable_amount (rate from hr.employee.fl_hourly_rate, else firm
  default ir.config_parameter fl_timesheet.default_hourly_rate)
- _resolve_analytic_account: prefers the case project's analytic account
  (version-agnostic field lookup), falls back to a cached firm account under any
  available analytic plan — handles the required account_id on the wrapped line
- Add 'analytic' to manifest depends; ACL for fl.timesheet and account.analytic.line
  (admin + paralegal) so non-admins can post entries
- fl.case: timesheet_ids + total_billable_hours/amount + total_ai_audit_hours +
  currency_id; new Time & Billing tab; Timesheets menu + standalone views
- Both AI agents now log non-billable audit entries via sudo() (paralegal +
  attorney, ai_agent set); logging stays a guarded no-op if creation fails

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

activeblue_familylaw/models/fl_attorney_agent.py

@@ -58,6 +58,7 @@ class FlAttorneyAgent(models.AbstractModel):
         statutes = self._candidate_statutes(case)
         caselaw = self._candidate_caselaw(case)
 
+        ai_used = False
         try:
             context = self._build_context(case, statutes, caselaw)
             result = self.env['fl.ai.engine'].call_claude_json(
@@ -69,13 +70,31 @@ class FlAttorneyAgent(models.AbstractModel):
                 max_tokens=3000,
             )
             self._store_memo(case, analysis, result, statutes, caselaw)
+            ai_used = True
         except Exception as exc:
             _logger.error("Attorney agent failed for case %s: %s",
                           case.id, exc, exc_info=True)
             self._store_fallback(case, analysis, statutes, caselaw, str(exc))
 
+        self._log_ai_time(case, 'Attorney strategy memo', ai_used)
         return analysis
 
+    def _log_ai_time(self, case, note, ai_used):
+        """Log a non-billable AI audit entry. No-op until fl.timesheet exists."""
+        if 'fl.timesheet' not in self.env:
+            return
+        try:
+            self.env['fl.timesheet'].sudo().create({
+                'case_id': case.id,
+                'name': note,
+                'is_billable': False,
+                'ai_agent': 'attorney',
+                'duration_hours': 0.1 if ai_used else 0.02,
+            })
+        except Exception as exc:  # never block on audit logging
+            _logger.warning("Attorney AI-time logging skipped for case %s: %s",
+                            case.id, exc)
+
     # ──────────────────────────────────────────────────────────────────────
     # Candidate library (grounds the model in real records)
     # ──────────────────────────────────────────────────────────────────────