resolutionflow/CLAUDE.md

CLAUDE.md - Patherly / ResolutionFlow Project Context

Last Updated: March 3, 2026

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Project Overview

Patherly (user-facing brand: ResolutionFlow) is a SaaS product for MSP professionals. It provides troubleshooting decision trees that guide engineers through proven troubleshooting paths, capture decisions and notes, and generate professional ticket documentation.

Target Market: MSP companies — IT service providers managing infrastructure and support for multiple clients.

SaaS Context: Multi-tenant design — teams represent MSP companies, trees shared within teams, tiered access (super_admin, team_admin, engineer, viewer).

Branding

Context	Name Used
Repository / directory / database / Docker	patherly / patherly_postgres
Backend, frontend UI, production URLs	ResolutionFlow

• Design: Dark glassmorphism with ice-cyan accent gradient (#06b6d4 → #22d3ee). Charcoal backgrounds, frosted-glass cards with backdrop-filter: blur(), orchestrated page-load animations, bold display typography. Design doc: docs/plans/2026-03-03-aesthetic-redesign-design.md
• Fonts: Bricolage Grotesque (font-heading, headings/titles), IBM Plex Sans (font-sans, body text), JetBrains Mono (font-label, labels/badges/timestamps) — loaded via Google Fonts
• Logo: Inline SVG in BrandLogo.tsx (decision-tree icon with cyan gradient). Wordmark: "Resolution" in text-foreground + "Flow" in text-gradient-brand
• Brand assets: brand-assets/ (source SVGs + brand-guide.html), frontend/src/assets/brand/ (app assets), frontend/public/icons/ (favicon)
• CSS utilities: text-gradient-brand, bg-gradient-brand, bg-gradient-brand-hover (defined in tailwind.config.js and index.css). Glass utilities: .glass-card (interactive, scale(1.02) hover), .glass-card-static (no hover transform), .active-glow (breathing cyan shadow)
• Layout: App shell with persistent sidebar + top bar + main content (CSS Grid). Two fixed atmosphere orbs (cyan top-right, purple bottom-left) behind the shell for ambient glow. See UI-DESIGN-SYSTEM.md
• Navigation: Sidebar nav with type sub-items (All Flows → Troubleshooting / Projects / Maintenance). Pinned flows section for quick access. NO workspace switcher. See UI-DESIGN-SYSTEM.md
• Terminology: User-facing label is "Flows" (not "Trees"). Procedural flows are called "Projects" in the UI. Maintenance flows are called "Maintenance" in the UI. tree_type column values unchanged in DB.
• Rebrand guide: REBRAND-IMPLEMENTATION-GUIDE.md

Component styling rules:

• Primary buttons: bg-gradient-brand (cyan 135deg) with shadow-lg shadow-primary/20, hover opacity-0.9, active scale(0.97)
• Secondary buttons: bg-[rgba(255,255,255,0.04)] with border-[rgba(255,255,255,0.06)], hover brightens border
• Active nav items: bg-primary/10 background + 3px left cyan gradient accent bar
• Stat values: use text-gradient-brand for highlighted metrics
• Status colors: emerald-400 (success), amber-400 (in-progress), rose-500 (error/critical)
• Category dots: 8px colored circles using the category color palette
• Tags/badges: font-label (JetBrains Mono), small rounded chips with bg-card border-border
• Cards: .glass-card (interactive) or .glass-card-static (non-interactive) — semi-transparent bg with backdrop-filter: blur(16px), border-radius: 16px
• Section labels: font-label text-[0.625rem] uppercase tracking-[0.1em] text-muted-foreground

When adding new pages/components: use "ResolutionFlow" branding, ice-cyan gradient accent theme, .glass-card / .glass-card-static containers, text-foreground/text-muted-foreground hierarchy. Primary actions use bg-gradient-brand. Pages render inside the app shell (CSS Grid: topbar + sidebar + main). Use "Flows" not "Trees" in all user-facing text; use "Projects" not "Procedures" for procedural flows. Reference UI-DESIGN-SYSTEM.md for layout patterns, navigation, and component specs.

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Current State

• Phase: Phase 2.5 - Step Library Foundation (In Progress)
• Backend: Complete (35+ API endpoints, 100+ integration tests)
• Frontend: Core features complete, Tree Editor functional
• Database: PostgreSQL with Docker, 49 migrations
• Detailed status: CURRENT-STATE.md

What's In Progress

• Step Library Frontend UI

Recently Completed

• AI chat session conclusion: outcome tracking, AI-generated ticket summaries, resume flow
• Survey completion: email-to-self, thank-you page, admin read/unread/archive/delete management
• Survey system: public survey page, admin invite tracking, response viewer with CSV export
• Email verification: tokens, banner, admin toggle (platform setting)
• AI assistant: in-session copilot panel, standalone chat with RAG
• Slate & Ice aesthetic redesign: glassmorphism, brand fonts, orchestrated animations
• Account management: profile settings, delete/leave/transfer, chat retention
• Maintenance flows: batch session launch, saved target lists, APScheduler scheduling

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Tech Stack

Backend

• Framework: Python FastAPI
• Database: PostgreSQL 16 (async via SQLAlchemy 2.0 + asyncpg)
• Migrations: Alembic
• Auth: JWT (python-jose) + bcrypt, refresh token rotation (JTI-based)
• Validation: Pydantic v2
• Scheduling: APScheduler 3.x (async, in-process with FastAPI lifespan) + croniter + pytz

Frontend

• Framework: React 19 + Vite + TypeScript
• Styling: Tailwind CSS v3 — dark-first with purple gradient accents (see Branding section)
• State: Zustand (with immer + zundo for undo/redo)
• Routing: React Router v7
• API Client: Axios with token refresh interceptor
• Icons: Lucide React

---

Key Project Structure

patherly/
├── backend/
│   ├── app/
│   │   ├── main.py                 # FastAPI entry point
│   │   ├── api/endpoints/          # Route handlers (auth, trees, sessions, admin, steps, survey, copilot, assistant_chat)
│   │   ├── api/deps.py             # Auth dependencies
│   │   ├── api/router.py           # Route registration
│   │   ├── core/                   # config, database, permissions, security, audit, rate_limit
│   │   ├── models/                 # SQLAlchemy models
│   │   └── schemas/                # Pydantic schemas
│   ├── alembic/                    # Database migrations (001-029+)
│   ├── scripts/                    # seed_data.py, seed_trees.py
│   └── tests/                      # pytest integration tests
├── frontend/
│   ├── src/
│   │   ├── api/                    # Axios client + endpoint modules
│   │   ├── components/             # common, layout, tree-editor, session, procedural, procedural-editor, library, step-library, ui
│   │   ├── hooks/                  # usePermissions, useSessionTimer, useKeyboardShortcuts
│   │   ├── pages/                  # All page components
│   │   ├── store/                  # Zustand stores (auth, treeEditor, proceduralEditor, userPreferences)
│   │   └── types/                  # TypeScript interfaces
│   └── tailwind.config.js
├── docs/plans/archive/             # Archived design/impl docs (pre-March 2026)
├── CLAUDE.md                       # This file
├── CURRENT-STATE.md                # Detailed feature status
├── LESSONS-LEARNED.md              # (Deprecated — consolidated into CLAUDE.md)
└── docs/plans/                     # Design docs & implementation plans

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Environment Variables

Backend (backend/.env)

APP_NAME=ResolutionFlow
DEBUG=true
DATABASE_URL=postgresql+asyncpg://postgres:postgres@localhost:5432/patherly
DATABASE_URL_SYNC=postgresql://postgres:postgres@localhost:5432/patherly
SECRET_KEY=<openssl rand -hex 32>
ACCESS_TOKEN_EXPIRE_MINUTES=5
REFRESH_TOKEN_EXPIRE_DAYS=7
REQUIRE_INVITE_CODE=true

Frontend (frontend/.env.local - optional)

VITE_API_URL=http://localhost:8000

---

Development Commands

# Start PostgreSQL
docker start patherly_postgres

# Backend (from backend/)
source venv/bin/activate        # Linux/Mac
# .\venv\Scripts\Activate       # Windows
uvicorn app.main:app --reload

# Frontend (from frontend/)
npm run dev

# Run tests (from backend/)
pytest --override-ini="addopts="

# First time only: create test database
docker exec -it patherly_postgres psql -U postgres -c "CREATE DATABASE patherly_test;"

# Frontend build (IMPORTANT: stricter than tsc --noEmit — always use as final check)
cd frontend && npm run build

# Database migrations
cd backend && alembic upgrade head
alembic revision --autogenerate -m "Description" --rev-id=NNN  # NNN = next sequential number

# Access PostgreSQL
docker exec -it patherly_postgres psql -U postgres -d patherly

# Seed data
cd backend && pip install httpx && python -m scripts.seed_trees

# CI/CD debugging
gh run list --limit 5                          # Recent CI runs
gh run view <id> --log-failed                  # Failed job logs
gh run watch <id> --exit-status                # Watch run until complete
gh run view <id> --json jobs --jq '.jobs[] | {name: .name, conclusion: .conclusion}'

URLs

• Frontend: http://localhost:5173
• Backend API: http://localhost:8000
• API Docs: http://localhost:8000/api/docs

Test Users (seeded via scripts/seed_test_users.py)

• All share password: TestPass123!
• admin@resolutionflow.example.com (super_admin), teamadmin@resolutionflow.example.com (team_admin), engineer@resolutionflow.example.com (engineer), pro@resolutionflow.example.com (solo pro)

---

Critical Lessons Learned

Top Gotchas (most commonly hit)

1. DateTime Handling — Always timezone-aware:

# CORRECT
created_at = Column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))
# NEVER use datetime.utcnow()

2. SQLAlchemy Async — No lazy loading on new objects:

# WRONG — MissingGreenlet error
new_tree = Tree(...); db.add(new_tree); await db.flush()
new_tree.tags.append(tag)  # Lazy load fails!

# CORRECT — Use direct SQL for junction tables
await db.execute(tree_tag_assignments.insert().values(tree_id=new_tree.id, tag_id=tag.id))

3. React State — Don't store object snapshots:

// WRONG — snapshot won't update
const [editingNode, setEditingNode] = useState(node)
// CORRECT — store ID, derive object
const [editingNodeId, setEditingNodeId] = useState(node.id)
const editingNode = editingNodeId ? findNode(editingNodeId, tree?.tree_structure) : null

4. Modal Draft State — Exclude store-managed fields:

const { children, ...draftWithoutChildren } = draft
updateNode(node.id, draftWithoutChildren)  // Don't overwrite children

5. Multiple FKs to same table — Specify foreign_keys on BOTH sides:

author = relationship("User", foreign_keys=[author_id], back_populates="trees")

6. PostgreSQL NULL in UUID columns:

SELECT 'tag', 'slug', NULL::uuid as team_id  -- Must cast NULL to uuid

7. API Path Gotcha: Frontend apiClient baseURL is http://localhost:8000/api/v1 — use relative paths WITHOUT /api/v1/ prefix (e.g., /admin/users not /api/v1/admin/users). Invite codes endpoint is /invites (NOT /invite-codes).

8. CORS errors can mask 500s: Check backend logs first. Also run alembic upgrade head after pulling changes.

11. CORS expose_headers for custom response headers: Browsers block frontend from reading custom headers (e.g. X-Redaction-Summary) unless CORS middleware includes expose_headers=["X-Custom-Header"]. Must be set in BOTH CORS branches in main.py.

9. Public endpoints with optional auth: Use manual _get_optional_user(request, db) helper, NOT Optional[User] param (FastAPI treats it as Pydantic field).

10. React Router — Clear dirty state before navigation:

markSaved()  // Clear isDirty BEFORE navigate()
navigate(`/trees/${newTree.id}/edit`)

12. TreeStructure vs Tree types: TreeStructure is for node structure only — it does NOT have tree_type, name, etc. Those are on Tree. JSONB tree snapshots need TreeStructure & Record<string, unknown> for extra fields.

13. Login redirect state format: navigate('/login', { state: { from: { pathname: '/path' } } }) — LoginPage expects state.from.pathname (object), NOT a plain string.

14. Type-aware routing for trees/sessions: Always use getTreeNavigatePath(treeId, treeType) from @/lib/routing instead of hardcoding /trees/:id/navigate. Procedural flows use /flows/:id/navigate. Session resume passes { state: { sessionId } }. TreeNavigationPage has a safety redirect for procedural trees.

15. Session sharing types: TreeSnapshot extends TreeStructure but session snapshots from the API include extra fields like tree_type. Use tree_snapshot?.tree_type to determine flow type from session data.

16. tree_type has three values: 'troubleshooting' | 'procedural' | 'maintenance'. Maintenance reuses the procedural execution engine. Use PROCEDURAL_TREE_TYPES set from core/tree_validation.py when checking for step-based flow types.

17. Alembic autogenerate can be destructive: alembic revision --autogenerate may generate DROP TABLE/ALTER COLUMN ops for unrelated tables (especially junction tables and tables with complex FKs). Always review generated migrations carefully. Prefer manual migrations for new tables: alembic revision -m "desc" then write the upgrade()/downgrade() by hand.

18. Pydantic partial updates — use model_fields_set: When a PUT/PATCH endpoint needs to distinguish "field not sent" from "field sent as null", check data.model_fields_set instead of data.field is not None. This allows clients to explicitly clear nullable fields like description.

19. gh pr merge fails with worktrees: When main is checked out in the primary worktree, gh pr merge crashes with "fatal: 'main' is already used by worktree". Use the API directly instead: gh api repos/ORG/REPO/pulls/N/merge --method PUT --field merge_method=squash

20. 'answer' node type in TreeStructure: answer is a transient stub type used only in the canvas editor. Any code that switches on node.type (validation, markdown serializer, session nav guard) must explicitly handle 'answer' or it will hit an unhandled-type error.

21. Test fixtures in conftest.py: Available fixtures are client (async HTTP client), test_db (async session), test_user (registers user, returns email/password/user_data), auth_headers (Bearer token dict), test_tree (creates a tree), test_admin (super_admin user), admin_auth_headers (admin Bearer token). There is NO async_client or engineer_token fixture.

22. Worktree venv path: Git worktrees (.worktrees/*/) do NOT have their own Python venv. Use the main repo's venv: backend/venv/bin/python -m pytest ... from the worktree directory.

23. Action nodes navigate via next_node_id, not children: TreeNavigationPage.tsx handles action nodes by following next_node_id only — the children array on action nodes is ignored at runtime. Action nodes without next_node_id render no "Continue" button (dead end). Any AI generation or manual tree editing must set next_node_id on action nodes.

24. Anthropic model IDs: Both alias (claude-sonnet-4-6) and dated (claude-haiku-4-5-20251001) forms work. Current default: claude-sonnet-4-6. See backend/app/core/config.py → AI_MODEL_ANTHROPIC.

25. Claude API may wrap JSON responses in markdown fences: When parsing AI-generated JSON, always strip ```json ... ``` fences before parsing. See _strip_markdown_fences() in ai_tree_generator_service.py.

26. sessionsApi.list supports batch_id filter (added Feb 2026): Both backend GET /sessions and frontend SessionListParams accept batch_id for querying all sessions in a maintenance batch. Use sessionsApi.list({ batch_id }) to fetch batch-scoped sessions.

27. Maintenance batch sessions are created all-at-once at launch: All sessions in a batch exist immediately after batchLaunchApi.launch() with batch_id + target_label set. started_at is null until a user begins executing that target — there is no "pending session creation" state.

28. AI tests in CI need ai_enabled mock: Backend tests that hit AI endpoints must mock settings.ai_enabled = True via PropertyMock since CI has no ANTHROPIC_API_KEY. See tests/test_ai_chat.py _enable_ai fixture pattern.

29. ESLint no-unused-vars has no argsIgnorePattern: Underscore-prefixed callback params (e.g., _count) still trigger errors. Use // eslint-disable-next-line @typescript-eslint/no-unused-vars or remove the param if the type signature allows it.

30. Alembic env.py must import all models: New models won't be discovered by --autogenerate unless imported in alembic/env.py. If a migration runs but the table isn't created, check imports first.

31. JSONB fields — convert datetime to .isoformat() string: Storing datetime objects directly in JSONB columns causes serialization errors. Always convert: "timestamp": datetime.now(timezone.utc).isoformat().

32. Export pipeline order matters: Generate export → resolve session variables → apply redaction. Redaction MUST run last or sensitive data injected via variables bypasses it. See sessions.py export endpoint.

33. Railway: DATABASE_URL_SYNC is a property, not an env var: It derives from DATABASE_URL by replacing postgresql+asyncpg:// with postgresql://. Delete any stale DATABASE_URL_SYNC variable in Railway dashboard.

34. Railway: run migrations in Docker CMD, not releaseCommand: releaseCommand in railway.toml is unreliable. Use CMD alembic upgrade head && uvicorn ... in the Dockerfile instead.

35. bcrypt==4.0.1 pinned for passlib compatibility: Newer bcrypt versions break password hashing. Keep bcrypt==4.0.1 and passlib[bcrypt]==1.7.4 pinned in requirements.txt.

36. Email validator rejects .local TLD: Pydantic's email validation (via email-validator) rejects .local as a reserved TLD. Use example.com for test/seed user emails.

37. First deployed user needs manual admin promotion: New users default to engineer role. Promote via SQL: UPDATE users SET role = 'admin' WHERE email = '...'; then re-login for new JWT.

39. Platform settings for feature toggles: Use SettingsManager.get("key", db, default=True) to gate features. Add toggle in admin/SettingsPage.tsx (same pattern as maintenance_mode). Frontend can check status via a lightweight GET endpoint without auth.

40. Survey public routes: SurveyPage is a public route (no auth). Survey invite tokens are passed as ?token= query param. Add public pages at top level in router.tsx alongside /login.

38. Alembic migrations MUST use sequential numbered prefixes: Check backend/alembic/versions/ for the highest numbered migration and use the next number. Format: XXX_descriptive_name.py (e.g., 040_add_whatever.py). NEVER use auto-generated revision IDs like 0f1ca2af3647. Always pass --rev-id flag: alembic revision --autogenerate -m "desc" --rev-id=040.

41. Assistant chat uses local React state, not a Zustand store: AssistantChatPage.tsx manages chats, activeChatId, messages, input, loading as useState. Don't look for a store when modifying assistant chat.

42. Public pages use raw fetch(), not apiClient: Survey, shared sessions, and other no-auth pages call the API directly via fetch() with ${import.meta.env.VITE_API_URL || 'http://localhost:8000'}/api/v1/.... Don't use apiClient — it requires auth tokens and uses relative paths.

43. Adding new email types: Add static async method to EmailService in core/email.py. Pattern: check settings.email_enabled, import resend, build HTML string, call resend.Emails.send(), return bool. Always fire-and-forget from endpoints (log errors, don't fail the request).

44. AI Chat Builder (Flow Assist) is flow-type-aware: ai_chat_service.py dispatches system prompts, response markers, and validation by flow_type. Troubleshooting uses [TREE_UPDATE] markers + validate_generated_tree(). Procedural/maintenance uses [STEPS_UPDATE] markers + validate_generated_procedural_steps(). Both support [METADATA]; procedural also supports [INTAKE_FORM].

45. Intake form field schema uses variable_name and field_type: NOT name and type. Pattern: {"variable_name": "server_name", "label": "Server Name", "field_type": "text", "required": true, "display_order": 1}. Used in tree_validation.py and AI prompt examples.

46. CreateFlowDropdown uses AIPromptDialog for AI-assisted creation: Opens a simple prompt dialog modal (not a separate page). The dialog starts an AI session, generates the flow, imports it, and navigates to the editor with { state: { aiPanelOpen: true, sessionId } }. The old standalone /ai/chat page and AIFlowBuilderModal have been removed.

47. Editor-Embedded Flow Assist architecture: AI assistance is embedded in each editor via EditorAIPanel (320px side panel) + useEditorAI hook + ContextMenu. Tree editor: panel replaces node editor panel (single-panel rule). Procedural editor: panel sits alongside step list (flex layout). Ghost nodes/steps use _suggestion: true flag with dashed borders + accept/dismiss controls. Action types (generate_branch, modify_node, add_steps, etc.) route to model tiers via settings.get_model_for_action(). Delta responses use [DELTA]...[/DELTA] markers. Suggestion audit trail in ai_suggestions table.

48. Tree orphan validation uses dynamic root ID: treeEditorStore.ts orphan check compares against state.treeStructure?.id (NOT hardcoded 'root'). AI-generated trees use descriptive root IDs like "verify-account-exists".

49. Full-stack features — verify both ends: When adding a field to a backend API response (e.g., working_tree in AIChatMessageResponse), always verify the frontend consumer actually reads and uses it. Similarly, when a frontend hook/component expects data from an API, confirm the backend populates it. Check the full data flow: schema → endpoint → API client → hook → store → UI.

50. Anthropic SDK retry behavior: Default max_retries=2 with exponential backoff can cause requests to take 3× the timeout (e.g., 45s × 3 = 135s). Set max_retries=1 in AnthropicProvider to fail fast. Current timeout is AI_REQUEST_TIMEOUT_SECONDS=120.

51. AI model tier routing: config.py has AI_MODEL_TIERS (fast/standard) and ACTION_MODEL_MAP mapping action types to tiers. Use settings.get_model_for_action(action_type) to resolve concrete model names. Model IDs must be valid — use alias form (claude-sonnet-4-6) not invented dated forms.

52. Mobile scroll-to-top — use scrollIntoView, not window.scrollTo: Mobile browsers (iOS Safari, Firefox Android) often ignore window.scrollTo(). Use a ref at the top of the page and call ref.current.scrollIntoView({ behavior: 'smooth', block: 'start' }) instead. Trigger via useEffect on the state change (not inline with setState) so the DOM has committed before scrolling.

---

RBAC & Permissions

• Role hierarchy: super_admin > team_admin > engineer > viewer
• Team Admin: role='engineer' + is_team_admin=True + valid team_id
• Backend deps: get_current_active_user(user, db) (any active + auto-downgrades expired trials), require_engineer_or_admin (blocks viewers), require_admin (super admin only)
• Never use role == "admin" — use is_super_admin instead
• Frontend: usePermissions() hook for all permission checks
• Centralized: backend/app/core/permissions.py, frontend/src/hooks/usePermissions.ts

---

Design System (Slate & Ice Modern)

• Theme: Dark glassmorphism with ice-cyan accent (#06b6d4 → #22d3ee). Uses .glass-card / .glass-card-static for card surfaces
• Backgrounds: bg-background (#101114 page), glass surfaces use rgba(24, 26, 31, 0.55) with backdrop-filter: blur()
• Cards: .glass-card (interactive, hover scale(1.02) + border/shadow upgrade) or .glass-card-static (no hover). Both have border-radius: 16px, semi-transparent bg, backdrop blur
• Buttons: Primary: bg-gradient-brand text-[#101114] font-semibold rounded-[10px] hover:opacity-90 active:scale-[0.97]. Secondary: bg-[rgba(255,255,255,0.04)] border-[rgba(255,255,255,0.06)] text-foreground rounded-[10px]
• Inputs: border-border bg-card text-foreground placeholder:text-muted-foreground + focus: focus:border-[rgba(6,182,212,0.3)]
• Text: text-foreground (#f8fafc) → text-muted-foreground (#8891a0) → text-[#5a6170] (dim, for section labels/timestamps)
• Borders: var(--glass-border) (rgba(255,255,255,0.06)) default, rgba(255,255,255,0.12) on hover
• Hover states: Border brightens to rgba(255,255,255,0.12), shadow upgrades to --shadow-float-hover
• Active/selected: bg-primary/10 text-foreground or cyan gradient accent bar
• Functional colors: emerald-400 (success), rose-500 (error), amber-400 (warning), blue-400 (info). Always pair with icons, not color alone.
• CSS variables: Glass system vars (--glass-bg, --glass-border, --glass-blur), shadow system (--shadow-float, --shadow-float-hover, --shadow-cyan-glow), easing (--ease-out-smooth) — all in index.css :root
• Animations: Orchestrated page-load sequence (slideDown, slideInLeft, fadeInUp cascade, fadeInRight). breatheGlow on first stat card. bellWobble on notification hover. See design doc for full spec.

---

Frontend Patterns

• Component guidelines: Use cn() from @/lib/utils, Lucide icons (wrap in <span> for title), modals with fixed header/footer
• Type organization: Create in types/, export from types/index.ts, import with import type { T } from '@/types'
• Scratchpad overlay: position: fixed, onOpenChange callback for parent padding adjustment, right-2 positioning
• Custom step flow: CustomStepModal → PostStepActionModal → ContinuationModal → custom step view. Key state: pendingStep, pendingContinuationNodeId, customBranchMode, branchOriginNodeId. Use findCustomStep() not findNode() for custom step UUIDs.
• Session sharing: ShareSessionModal manages share links, SharedSessionPage renders public/account views. Helper utils in lib/sessionShare.ts. Share URLs use /shared/sessions/:token.
• Procedural navigation: ProceduralNavigationPage handles intake forms, step-by-step execution, and resume via location.state.sessionId. Uses StepChecklist, StepDetail, ProgressBar, CompletionSummary components.
• Routing helper: Use getTreeNavigatePath() and getTreeEditorPath() from @/lib/routing for all tree/session navigation.
• Account section layout: AccountLayout has NO sidebar nav. Account sub-pages (categories, target-lists) are reached via link cards on AccountSettingsPage.tsx. New account pages: add route in router.tsx under account children + add a link card in AccountSettingsPage.

---

Common Tasks

• New endpoint: Create in endpoints/ → add to router.py → schema in schemas/ → tests → frontend API client
• New page: Create in pages/ → add route in router.tsx → nav link in AppLayout.tsx
• New public route (no auth): Add at top level in router.tsx alongside /login, /register — NOT inside the ProtectedRoute/AppLayout children.
• Schema change: Update model → alembic revision --autogenerate -m "desc" → review → alembic upgrade head
• New frontend API module: Types in types/ → export from types/index.ts → client in api/ → export from api/index.ts

---

Coding Standards

Python

• Type hints everywhere, async/await for DB, Pydantic for validation, DateTime(timezone=True) always

TypeScript

• Interfaces for all data, const over let, functional components + hooks, reusable logic in custom hooks

Git

• Format: type: description (feat, fix, refactor, docs, test, chore)
• Always include Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
• Always create feature branch BEFORE committing: git checkout -b feat/feature-name
• Large features: commit per phase with npm run build validation

After Completing Work

When a feature, fix, or significant piece of work is finished and merged/committed:

1. Update CURRENT-STATE.md — move completed items, update "In Progress" and "What's Next" sections
2. Update 03-DEVELOPMENT-ROADMAP.md — check off completed work, update phase status
3. Close related GitHub Issues — use gh issue close #N for any issues resolved by the work
4. Update CLAUDE.md if the work introduced new patterns, lessons learned, or changed project structure

---

Deployment (Railway)

• Production: resolutionflow.com (frontend), api.resolutionflow.com (backend)
• Auto-deploys on push to main
• PR environments auto-created (need manual domain generation in Railway dashboard)
• PR envs need VITE_API_URL set with https:// prefix on frontend service
• ALLOW_RAILWAY_ORIGINS=true enables CORS for *.up.railway.app
• Shared Variables (project-level in Railway dashboard) auto-propagate to all environments including PR envs — use for secrets like ANTHROPIC_API_KEY
• Super admin utility: backend/make_superadmin_simple.py list|<email>

---

Future Roadmap

• Phase 3: File attachments, offline mode, client context, analytics
• Phase 4: PSA integrations (ConnectWise, Kaseya), PowerShell automation, enterprise SSO

---

Quick Reference

What	Where
API Docs	http://localhost:8000/api/docs
Detailed Status	CURRENT-STATE.md
Development Roadmap	03-DEVELOPMENT-ROADMAP.md
GitHub Issues	gh issue list --state open
Bugs & Fixes	CLAUDE.md → Critical Lessons Learned section
Feature Specs	04-FEATURE-SPECIFICATIONS.md
Design System	docs/plans/Frontend/DESIGN_SYSTEM_GUIDE.md