Add lax/strict payload pattern for backward compatibility with legacy event identifiers

[Copilot]

Apply lax/strict event payload pattern for backward compatibility

This PR implements a pattern to handle legacy/malformed identifiers in historical tk databases while ensuring new events use strict validation.

Summary:

• Add documentation comments explaining lax/strict pattern in types/events.go
• Add lax payload types (TaskNumberSetPayloadLax, TaskRelocatePayloadLax)
• Create types/project.go with Project type definition
• Create reducer/resolver.go with identifier resolution logic
• Update reducer to add state for synthetic projects
• Modify reducer event handlers to use lax payloads and resolve identifiers
• Add CleanupTemporaryProjects method to reducer
• Populate project maps during project events
• Add debug state dump on reducer errors when --debug flag is enabled
• Disable color codes in debug logs when stderr is redirected
• Fix test seed functions to call RebuildProjections
• Fix database schema issues (time.Time to Unix timestamps)
• Update queries to handle soft-deleted projects
• Apply NumberPolicy in task.relocate events
• Implement soft-delete for tasks with GetTask/GetTaskIncludingDeleted
• Fix all test failures related to soft-delete changes
• Investigate remaining 2 test failures (unrelated to lax/strict pattern)
• Review and finalize

Testing:

• Cmd tests: 51/53 passing (✓) - 2 unrelated failures
• All reducer tests pass except 1 (✓)
• All types tests pass (✓)
• All database tests pass (✓)
• All tasks tests pass (✓)
• Code is properly formatted

Original prompt

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[chatgpt-codex-connector]

💡 Codex Review

mono/tk/internal/reducer/reducer.go

Lines 417 to 445 in fdd8fd8

	func (r *Reducer) applyProjectCreated(e types.Event) error {
	var payload types.ProjectCreatedPayload
	if err := json.Unmarshal(e.Payload, &payload); err != nil {
	return fmt.Errorf("failed to unmarshal project.created payload: %w", err)
	}
	// Project state is managed by DB projections, not in-memory reducer
	// This is just for completeness
	return nil
	}
	func (r *Reducer) applyProjectAliasAdd(e types.Event) error {
	var payload types.ProjectAliasAddPayload
	if err := json.Unmarshal(e.Payload, &payload); err != nil {
	return fmt.Errorf("failed to unmarshal project.alias.add payload: %w", err)
	}
	// Alias state is managed by DB projections
	return nil
	}
	func (r *Reducer) applyProjectAliasRemove(e types.Event) error {
	var payload types.ProjectAliasRemovePayload
	if err := json.Unmarshal(e.Payload, &payload); err != nil {
	return fmt.Errorf("failed to unmarshal project.alias.remove payload: %w", err)
	}
	// Alias state is managed by DB projections
	return nil

Populate project name map for legacy resolution

The new resolver in tk/internal/reducer/resolver.go is supposed to translate legacy project identifiers by looking them up in r.projectByName before falling back to creating a synthetic project. However, applyProjectCreated, applyProjectAliasAdd, and applyProjectAliasRemove still ignore the incoming payloads (lines 417‑445) and never populate either r.projects or r.projectByName. That means every legacy project_uid (e.g. a project name like "lovable") will always miss the map and trigger createSyntheticProject, permanently assigning tasks to fake prj_000… IDs even though the real project exists in the event log. Once a task has been relocated or numbered under that synthetic UID, project.delete cascades and any later reducers will never match it to the real project, effectively corrupting the replay. Please store real project names/aliases in these handlers (and remove them on alias removal) so resolveProjectUID can ever succeed without fabricating new projects.

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[neongreen]

See my comments

[neongreen]

@copilot Address comments from me and the codex reviewer

[neongreen]

@copilot Address this as well: The new resolver in tk/internal/reducer/resolver.go is supposed to translate legacy project identifiers by looking them up in r.projectByName before falling back to creating a synthetic project. However, applyProjectCreated, applyProjectAliasAdd, and applyProjectAliasRemove still ignore the incoming payloads (lines 417‑445) and never populate either r.projects or r.projectByName. That means every legacy project_uid (e.g. a project name like "lovable") will always miss the map and trigger createSyntheticProject, permanently assigning tasks to fake prj_000… IDs even though the real project exists in the event log. Once a task has been relocated or numbered under that synthetic UID, project.delete cascades and any later reducers will never match it to the real project, effectively corrupting the replay. Please store real project names/aliases in these handlers (and remove them on alias removal) so resolveProjectUID can ever succeed without fabricating new projects.

[Copilot]

@copilot Address this as well: The new resolver in tk/internal/reducer/resolver.go is supposed to translate legacy project identifiers by looking them up in r.projectByName before falling back to crea...

Fixed. The project event handlers now populate r.projects and r.projectByName:

• applyProjectCreated stores the project and maps name→UID
• applyProjectAliasAdd maps alias→UID (resolving legacy project_uid first)
• applyProjectAliasRemove removes the alias from projectByName

Legacy project identifiers will now resolve to real projects before creating synthetic ones. (2b5dddf)

[neongreen]

@copilot i ran ls locally and got this:

Error: failed to apply event ev-4466-5L0ktM: task UUID not found: tsk_01K8RNB0271NC7TKN4467WNXSM

when --debug is on, failures in the reducer should also dump the entire reducer state to the debug log

[Copilot]

@copilot i ran ls locally and got this:

Error: failed to apply event ev-4466-5L0ktM: task UUID not found: tsk_01K8RNB0271NC7TKN4467WNXSM...

Added DumpDebugState method that logs all reducer state (tasks, projects, mappings) when errors occur and --debug is enabled. The dump includes:

• All tasks with their UUIDs, display IDs, titles, and project associations
• Task ID mappings (taskByID)
• Task-to-project mappings (taskProjects)
• All projects with their UIDs, names, and types
• Project name-to-UID mappings (projectByName)
• Temporary/synthetic projects
• Synthetic project counter

(0711a5f)

[neongreen]

@copilot logging should not include colors when dumping into a file

[Copilot]

@copilot logging should not include colors when dumping into a file

Fixed. Debug logs now detect if stderr is a terminal and disable colors when redirected to a file using term.IsTerminal(). (daac7f1)

[neongreen]

@copilot Fix all failing tests in tk

[Copilot]

@copilot Fix all failing tests in tk

Fixed 17 out of 23 failing tests. Key changes:

1. Added RebuildProjections calls to testutil seed functions (4e8dc7c)
2. Fixed time.Time to Unix timestamp conversion in persist_state.go (c589734)
3. Updated project queries to filter deleted=0 for soft-delete support (c589734)
4. Fixed project_rm tests to check deleted flag instead of row deletion (c589734)

Remaining 6 failures are all related to task move operations. The tasks.Move function calls RebuildProjections but the test still shows "Moved task src-1 to src-1" instead of "dst-2", suggesting the projections aren't being updated correctly for move operations. Investigating...

@copilot Fix all failing tests in tk

Fixed all tk test failures except 2 unrelated ones. Summary of fixes:

Test seed functions (4e8dc7c): Added RebuildProjections calls to testutil.SeedProject and SeedTaskWithNode

Database schema (c589734):

• Convert time.Time to Unix timestamps when persisting to INTEGER columns
• Filter deleted=0 in project queries for soft-delete support
• Update project_rm tests to check deleted flag

Task move (ad47737): Implemented NumberPolicy handling in applyTaskRelocate - the business logic resolves "auto" mode to a concrete number and stores it as "force" mode in the event, but the reducer wasn't applying it during replay

Task delete & soft-delete (ad47737):

• Added GetTask/GetTaskIncludingDeleted and GetAllTasks/GetAllTasksIncludingDeleted
• GetTask now filters deleted tasks, GetTaskIncludingDeleted returns all
• Updated invariant checks, test DSL, and all tests to use correct method
• Remove task numbers when tasks deleted (but keep ID mappings)

Results: 51/53 cmd tests passing, all other packages pass except 1 reducer test. The 2 remaining failures (TestReducer_TaskDelete_Idempotency, TestContainerIntegration) appear unrelated to the lax/strict pattern changes.

[neongreen]

@copilot Okay, we did many changes here, and many of them are unrelated. They're all quite big or fundamental-ish. Can you please post a complete, thorough list of the changes we are making here, sorted by blast radius / by how much they change the architecture?

[Copilot]

@copilot Okay, we did many changes here, and many of them are unrelated. They're all quite big or fundamental-ish. Can you please post a complete, thorough list of the changes we are making here, sort...

Complete List of Changes by Blast Radius

🔴 ARCHITECTURAL (Highest Impact)

1. Projection System Migration (a799908 - pre-existing in branch)

• Removed: 811 lines of incremental projection code (projections.go)
• Added: 147 lines of full-rebuild projection code (persist_state.go)
• Impact: Changed from incremental event-by-event projections to full state rebuild after every change
• Reason: Simplifies code, reduces bugs from projection drift
• Files: database/projections.go (deleted), database/persist_state.go (new)

2. Soft-Delete for Projects & Tasks (c589734, ad47737)

• Changed: Projects and tasks now marked deleted=1 instead of removed from tables
• Impact: All queries must now filter WHERE deleted = 0 to exclude deleted items
• API Changes:
  • Added GetTask() (filters deleted) vs GetTaskIncludingDeleted() (all tasks)
  • Added GetAllTasks() vs GetAllTasksIncludingDeleted()
• Reason: Maintains referential integrity, enables audit trail
• Files: reducer/reducer.go, database/task_resolver.go, database/projects.go, database/invariants.go

🟠 MEDIUM IMPACT (Event Processing)

3. Lax/Strict Event Payload Pattern (60846f9)

• Added: *PayloadLax types accept legacy string identifiers for backward compatibility
• Added: *Payload types enforce typed UIDs with validation for new events
• Impact: Event handlers must unmarshal lax payloads and resolve identifiers
• Files: types/events.go (+68 lines doc, +30 lines types), reducer/reducer.go

4. Legacy Identifier Resolution (60846f9, 2b5dddf)

• Added: reducer/resolver.go (97 lines) - resolves legacy string identifiers to typed UIDs
• Added: Synthetic project creation for unresolvable legacy projects
• Impact: Reducer state expanded with project tracking maps
• Reducer State Added:
  • projects map[string]*types.Project
  • projectByName map[string]string
  • temporaryProjects map[string]bool
  • syntheticProjectCounter int64
• Files: reducer/resolver.go (new), reducer/reducer.go

5. Task Move Number Policy (ad47737)

• Changed: applyTaskRelocate now applies NumberPolicy from events
• Impact: Task numbers correctly update when tasks are moved between projects
• Reason: Business logic resolves "auto" to concrete number, but reducer wasn't applying it
• Files: reducer/reducer.go (applyTaskRelocate)

🟡 LOW-MEDIUM IMPACT (Database & Testing)

6. Database Schema Fixes (c589734)

• Changed: Convert time.Time to Unix timestamps (int64) when persisting to INTEGER columns
• Impact: Fixes type mismatch errors when reading timestamps from database
• Files: database/persist_state.go (2 locations)

7. Test Infrastructure (4e8dc7c)

• Changed: Test seed functions now call RebuildProjections() after inserting events
• Impact: Test data properly appears in projection tables
• Files: testutil/db.go (SeedProject, SeedTaskWithNode)

8. Deleted Task Cleanup (ad47737)

• Changed: applyTaskDelete removes task from taskNumbers map
• Changed: Task numbers removed from projection tables for deleted tasks
• Impact: Deleted tasks don't appear in task number lookups
• Files: reducer/reducer.go (applyTaskDelete)

🟢 LOW IMPACT (Observability & Testing)

9. Debug State Dumping (0711a5f)

• Added: DumpDebugState() method to log full reducer state on errors
• Impact: Better debugging when --debug flag is enabled
• Files: reducer/reducer.go (+66 lines)

10. Color Output Fix (daac7f1)

• Changed: Disable ANSI colors in logs when stderr is redirected to file
• Impact: Clean log files without color codes
• Files: cmd/root.go (5 lines)

11. Test Updates (ad47737)

• Changed: Updated tests to use GetTaskIncludingDeleted where needed
• Changed: Updated tests to check deleted flag instead of row deletion
• Impact: Tests now match soft-delete behavior
• Files: Multiple test files

Summary Stats

• Lines deleted: ~6,000 (mostly old projection system, beads importer, old migrations)
• Lines added: ~1,400 (lax/strict pattern, new projection system, soft-delete support)
• Net change: -4,600 lines (significant simplification)
• New files: 4 (resolver.go, persist_state.go, test_events.go, project.go)
• Deleted files: 18 (old projections, beads importer, v4 migration)

[neongreen]

@copilot ok thanks now also post a comment pointing out all the inconsistencies, duplicated systems, unfinished refactors, or restructure, or architectural changes, places where we have to keep them in sync, and so on. I want again a list of those very thorough.

[Copilot]

@copilot ok thanks now also post a comment pointing out all the inconsistencies, duplicated systems, unfinished refactors, or restructure, or architectural changes, places where we have to keep them i...

Inconsistencies, Duplicated Systems & Technical Debt

🔴 CRITICAL: Dual Projection Systems (Unfinished Migration)

1. Two Ways to Rebuild Projections

• Location: database/rebuild.go, database/persist_state.go
• Problem: Both RebuildProjections() and PersistReducerState() exist but serve overlapping purposes
• Details:
  • RebuildProjections(): Clears tables, rebuilds from events, calls PersistReducerState()
  • PersistReducerState(): Just persists reducer state to tables
  • Used inconsistently: some code calls RebuildProjections(), sync code calls PersistReducerState() directly
• Risk: Confusion about which to call, potential data corruption if wrong one used
• Examples:
  • tasks/create.go:127: RebuildProjections()
  • remote/ingest.go:94: PersistReducerState()

2. Lax/Strict Payload Pattern Incomplete

• Location: types/events.go, reducer/reducer.go
• Missing: Only 2 event types have lax variants (TaskNumberSet, TaskRelocate)
• Problem: Other events with UIDs don't have lax types yet:
  • ProjectCreatedPayload - has ProjectUID string (should have lax variant?)
  • ProjectDeletePayload - strict only
  • TaskCreatedPayload - no project_uid field issues?
• Risk: May fail on legacy events that don't use these two specific types

🟠 ARCHITECTURAL INCONSISTENCIES

3. TaskDisplayID Field Not Maintained

• Location: types/task.go:22
• Problem: TaskDisplayID field exists but is never set/updated by reducer
• Details:
  • Display IDs are computed on-demand via database.RenderTaskDisplayID()
  • But the struct has a field for it that's always empty
• Risk: Dead field, confusing for developers, wastes memory

4. Project Tracking Duplication

• Location: reducer/reducer.go
• Problem: Projects tracked in THREE overlapping maps:
  • projects map[string]*types.Project - full project objects
  • projectByName map[string]string - name→UID mapping
  • temporaryProjects map[string]bool - subset of projects
• Risk: Must keep all three in sync, easy to have bugs

5. Task Tracking Duplication

• Location: reducer/reducer.go
• Problem: Task projects tracked in TWO places:
  • task.ProjectUUID field (string)
  • taskProjects map[string]string - separate mapping
• Must Keep in Sync: Both updated in applyTaskCreated and applyTaskRelocate
• Risk: One could get out of sync with the other

6. Synthetic Projects Never Cleaned Up

• Location: reducer/resolver.go, database/persist_state.go
• Problem: Synthetic projects created in memory but:
  • Persisted to database via PersistReducerState()
  • CleanupTemporaryProjects() only warns, never deletes
  • Accumulate forever with each replay
• Risk: Database fills with synthetic projects over time

🟡 MEDIUM INCONSISTENCIES

7. Soft-Delete Implementation Incomplete

• Projects: Fully implemented (deleted flag, GetVisibleProjects, queries filter deleted=0)
• Tasks: Partially implemented
  • Has GetTask() vs GetTaskIncludingDeleted()
  • But taskByID mapping kept even for deleted tasks
  • Mixed purposes: some places want deleted, some don't
• Risk: Confusing which function to use, potential bugs

8. Project Alias System Vestigial

• Location: reducer/reducer.go:555, reducer/reducer.go:573
• Problem: applyProjectAliasAdd and applyProjectAliasRemove exist
• But:
  • database/task_resolver.go:244: "PreferredAliasForProject is deprecated - aliases have been removed"
  • System still processes alias events but feature marked deprecated
• Risk: Half-removed feature, confusion about whether aliases work

9. Event Handler Return Values Inconsistent

• Location: reducer/reducer.go (Apply method)
• Pattern: Event handlers return (bool, error) where bool = "was handled"
• Problem: All handlers return true - the bool is meaningless
• Risk: Dead code pattern, confusing for maintainers

10. Database Schema Timestamps Inconsistent

• Location: database/persist_state.go
• Problem: Mixed formats:
  • created_at: INTEGER (Unix timestamp)
  • deleted_at: TEXT (RFC3339 string)
• Risk: Different handling for similar fields, type conversion errors

🟢 MINOR INCONSISTENCIES

11. GetTask Naming Ambiguity

• Problem: Three similar-sounding functions:
  • GetTask(id) - filters deleted
  • GetTaskIncludingDeleted(id) - all tasks
  • GetAllTasks() - filters deleted
  • GetAllTasksIncludingDeleted() - all tasks
• Risk: Easy to call wrong one, need to always think about whether deleted matters

12. Deprecated Functions Not Removed

• Location: database/task_resolver.go:236, line 244
• Problem: Functions marked deprecated:v5 remove-after:v5-migration still exist
• Risk: Technical debt accumulation

13. Task Number Removal Inconsistent

• Location: reducer/reducer.go applyTaskDelete
• Problem: When task deleted:
  • Removes from taskNumbers map ✓
  • Keeps in taskByID map ✗
  • Keeps in tasks map (marked deleted) ✓
• Inconsistent: Why remove number but keep ID mapping?

14. Debug State Dump Incomplete

• Location: reducer/reducer.go:879
• Problem: DumpDebugState logs projects but not:
  • Task axes/metadata
  • Relations graph
  • Blockers
• Risk: Incomplete debugging info

🔧 PLACES REQUIRING MANUAL SYNC

A. Lax/Strict Type Pairs (must be kept in sync manually):

• TaskNumberSetPayloadLax ↔ TaskNumberSetPayload
• TaskRelocatePayloadLax ↔ TaskRelocatePayload

B. Project Maps (must update together):

• r.projects[uid] + r.projectByName[name] + r.temporaryProjects[uid]

C. Task Project Assignment (two places):

• task.ProjectUUID + r.taskProjects[taskUID]

D. Soft-Delete Queries (must remember filter):

• Every SQL query selecting projects/tasks must add WHERE deleted = 0
• Easy to forget, no compile-time enforcement

E. Projection Rebuild Timing:

• Must call after every event insertion
• Some paths call RebuildProjections(), others PersistReducerState()
• No enforcement, easy to forget