Implements the full dual-mode tree editor (Plan Phases 1-5):
Backend:
- JSONB↔Markdown bidirectional serializer/parser with mistune
- Markdown validator with line/column error reporting
- 3 API endpoints: export-markdown, import-markdown, validate-markdown
- Variable extraction/resolution service ([USER_INPUT], [VAR], [SAVE_AS])
- Session variables JSONB column (migration 028)
- 39 tree markdown tests + variable service tests (403 total passing)
Frontend:
- Monaco-based Code Mode with custom Monarch tokenizer and dark theme
- Autocomplete for @node_id refs, type values, variable names
- Debounced validation (800ms) with inline Monaco error markers
- Syntax help panel (absolute overlay, toggleable)
- Starter template for new trees with valid cross-references
- Bidirectional metadata sync (name/description/category/tags frontmatter)
- Synchronous tree→markdown serializer (fixes async race condition)
- Pre-save validation blocks save on broken refs or missing tree name
- Mode-aware undo/redo: Monaco native in Code Mode, throttled zundo in Flow Mode
- Variable prompt modal and frontend resolver for session navigation
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implement three foundational schema features from the design doc:
- Tree forking with lineage tracking (migration 022): parent_tree_id,
root_tree_id, fork_depth columns with self-referential FKs and
composite analytics index
- Custom step enhancement: CustomStepSchema with source tracking
(ad-hoc, step-library, forked-tree) for backward-compatible JSONB
- Session sharing (migration 023): session_shares and session_share_views
tables with account-scoped visibility, cryptographic tokens, view
tracking, and allow_public_shares account policy
Includes 21 new integration tests (9 forking, 12 sharing), SaaS
consultant-recommended denormalizations, rate limiting on public share
access, and test fixture fix for invite code requirement.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
