New dispatch — Brief #32 (brief dependency chains with agent-affinity, v2 of #31). Run: git checkout -b flower/brief-affinity master (master now has #31 brief-relations merged — you build ON its BriefRelationService + brief_dependencies + recall_disp

next steps

• Write migration to add agent_tool and session_id columns to dispatch_requests table
• Update DispatchRequest model casts and fillable
• Modify DispatchService::dispatch to accept and store agent_tool and session_id
• Modify DispatchService::complete/completeForBrief to pass completion actor info for affinity derivation
• Add method to BriefRelationService to compute affinity hint from a brief's completed blocker dispatch
• Update RecallDispatchQueueTool to include affinity hint in its response
• Update Livewire Briefs/Index to show affinity hint in dispatchable filter view
• Write/update tests for new functionality
• Run php artisan test and pint on changed files
• Commit with 'Brief: #32' trailer

key decisions

• Add optional agent_tool (string) and session_id (string) columns to dispatch_requests table, separate from resume_session_id
• Capture affinity metadata at dispatch time, not retroactively
• Derive a dependent's affinity hint from the latest Done dispatch request of its immediate blocking brief
• Affinity hint includes the predecessor's target_worktree, agent_tool, and session_id
• Do not auto-spawn agents when affinity exists; dispatch stays orchestrator-mediated
• No behavior change when no affinity exists
• Use additive approach — no migrations or schema changes to existing columns
• Keep resume_session_id semantics for Resume dispatch kind unaffected

open questions

• Should agent_tool be stored as a free-text string or a foreign key to an agent_tools table?
• Should the session_id field accept any session identifier or only UUIDs from known harnesses?
• Where exactly in the Livewire briefs/index.blade.php should the affinity hint be displayed?
• Does BriefRelationService need a new method to compute affinity, or can it be inlined in DispatchService?

next steps

• Implement affinity capture fields and propagation

key decisions

—

open questions

—

next steps

• Merge into master after review

key decisions

• Capture affinity from dispatch input fields (agent_tool, session_id) rather than from event logs.
• Derive hint for a brief from its predecessor's latest 'done' dispatch request's captured affinity.
• Surface affinity in MCP completion/queue responses and in the dispatchable list UI as a chip.

open questions

—

next steps

—

key decisions

• Commits a4d956f, c31524e, 0b096ec finalize Brief #32 on branch flower/brief-affinity
• Implementation records agent_tool/session_id on dispatch_requests and surfaces affinity hints in recall_dispatch_queue and /briefs view
• No auto-spawn behavior added per spec
• Branch not merged; operator handles merge

open questions

—

next steps

• Read current BriefRelationService, model, migrations, enums, and MCP tool files to understand existing patterns
• Implement merge() method on BriefRelationService with guards (self-merge, cycles, complete/cancelled sources) and row re-pointing
• Create brief_merge MCP tool and register in FlowerServer
• Add merged_into/merged_from event kind + schema migration for merged_into_brief_id column
• Add service-level tests for merge, then run pint, focused tests, and full test suite

key decisions

• Create branch flower/brief-merge from master (master includes both #31 and #32 merges)
• Use existing BriefRelationService pattern for additive merge behavior
• Do NOT implement UI/recall changes in this first segment; focus on service and MCP tool

open questions

—

next steps

• Create migration adding merged_into_brief_id to briefs table
• Add Merged and MergedFrom event kinds
• Add mergedInto relationship on Brief model + casts
• Implement BriefRelationService::merge() with guards and row re-pointing
• Create BriefMergeTool MCP tool and register in FlowerServer
• Write tests for the merge operation
• Add recall provenance (merged_into/merged_from) in RecallService

key decisions

• Merge operation will re-point children, depends-on edges, dependent edges, links, participants, and projects from sources to survivor
• Schema will use a nullable merged_into_brief_id column on briefs table (self-FK)
• Will add BriefEventKind::Merged and BriefEventKind::MergedFrom cases
• Will protect against self-merge, cycle detection, and merging already-complete/cancelled briefs

open questions

—

next steps

• Run php artisan test --filter BriefRelationServiceTest to verify new merge tests pass
• Run pint on changed files
• Run full test suite
• Add merged_into/merged_from provenance to recall_brief output
• Surface merge UI action and merged-away briefs in /briefs dispatchable view
• Add MCP tool-level test for BriefMergeTool

key decisions

• Use merged_into_brief_id column on briefs table with index and FK where the driver supports it
• Add BriefEventKind::Merged and BriefEventKind::MergedFrom for provenance
• merge() guarded: rejects self-target, non-existent briefs, complete/cancelled/abandoned sources, and would-create cycles
• Row re-pointing: moves children, depends-on edges (source as dependent), dependent edges (source as blocker), links, participants, and projects to survivor; deduplicates against unique constraints
• Sources are set to status=cancelled and updated with merged_into_brief_id
• Merge trace events recorded on both survivor and each source
• BriefMergeTool added as MCP tool with source_ids[], target_id, and actor_ref
• Added 8 service-level tests and extended FoundationTest

open questions

—

next steps

—

key decisions

• Split merge work into three commits for clarity: core merge API, recall provenance, and /briefs UI.
• Kept eager-loading minimal by using merged_into_brief_id pointer and withCount for survivor rollup.

open questions

—

next steps

• Add config key 'flower.ingest.compress_events' (default true).
• Create migration adding nullable text_gz LONGBLOB to session_events.
• Add transparent accessor/mutator on SessionEvent model for gzcompress/gzuncompress with legacy fallback.
• Create flower:compress-session-events backfill command with dry-run, --force, --batch, and table size reporting.
• Write sqlite tests: round-trip, legacy fallback, ingest/segment smoke.
• Run Pint and full test suite, commit per unit with Brief: #43 trailer.
• Append progress to Brief #43 and hand back without merge.

key decisions

• Will not run migration, backfill, or mutating tinker against live MAIN DB; only sqlite tests.
• Will flag Horizon graceful reload because IngestSession/SegmentSession touch session_events.

open questions

—

next steps

• Run the full test suite to ensure no regressions
• Run Pint for code style formatting
• Commit the changes

key decisions

• Use a model-specific builder (SessionEventBuilder) to intercept bulk inserts and compress text_gz consistently
• Add a config toggle `flower.ingest.compress_events` defaulting to true, version-controlled
• Use raw SQL `LONGBLOB` for MySQL and `binary` for sqlite in migration to avoid blueprint method incompatibility
• Keep the public `text` attribute API unchanged; compression is transparent to all callers
• Add a backfill command with dry-run default to avoid accidental mutation

open questions

—

next steps

—

key decisions

• Split into two commits: storage plumbing first, backfill command second, each with 'Brief: #43' trailer.
• Used same pattern as v1: gzcompress on set, gzuncompress on get, legacy fallback, bulk insert() coverage, config gate.

open questions

—

next steps

• Write sqlite tests for tool_input/usage round-trip, legacy fallback, bulk insert, and touch-service query post-compression.
• Run Pint and focused tests, then full sqlite suite.
• Commit in per-unit chunks with 'Brief: #51' trailer.
• Append progress to Brief #51 via MCP.

key decisions

• Mirror v1 pattern exactly: gzcompress JSON on set, gzuncompress+json_decode on get, legacy fallback, config gate, bulk insert() coverage.
• Replace existing 'tool_input' and 'usage' casts with custom compressed JSON accessors to avoid double-decoding conflicts.
• Fix SessionProjectTouchService presence check to use tool_input_gz instead of tool_input.
• Extend existing flower:compress-session-events command rather than creating a new one; add --optimize flag.

open questions

• Whether the --optimize flag should be MySQL-only and how to handle it in sqlite tests.

next steps

—

key decisions

• Split the changes into two commits: storage/query behavior first, then command backfill/optimize.
• Kept legacy JSON columns alongside new compressed columns for backward compatibility.
• Extended existing compression accessors/mutators to tool_input and usage, sharing the #43 config gate.
• Added --optimize flag for MySQL OPTIMIZE TABLE after forced backfill.

open questions

—

next steps

• Add session failure columns/config and model casts.
• Wire SegmentSession success/failure reset/increment and preflight cap.
• Enforce failed-attempt debounce/cap in IngestSession and backlog visibility.
• Add/adjust sqlite tests for subdivision config, failure counters, cap, and non-timeout behavior.
• Run Pint/tests, commit per unit, append Brief #58 progress.

key decisions

• Will build on existing adaptive timeout subdivision code already present on master.
• Will add a config knob for subdivision factor (currently hardcoded at 2).
• Will add per-session failure columns (summarize_failures, last_summarize_failed_at) and enforce cap in IngestSession::chainSegmentation and SegmentSession preflight.
• Will surface failure counts in flower:ingest-backlog report.

open questions

—

next steps

—

key decisions

• Use configurable factor instead of hardcoded /2 to allow tuning subdivision aggressiveness.
• Non-timeout map errors should not trigger subdivision; only timeout errors do.

open questions

—

next steps

—

key decisions

• Use a dedicated SummarizeFailurePolicy service rather than duplicating cap/debounce math across jobs.
• SegmentSession preflight-skips capped or recently failed sessions before invoking the summarizer.
• IngestSession skips SegmentSession dispatch when policy says skip, matching too-large guard behavior.
• Backlog command shows two new buckets: summary failed circuit-open and summary retry debounced.

open questions

—

next steps

• Add start_event_ordinal and end_event_ordinal columns to session_segments table via migration.
• Add a frozen_until_event_ordinal (or similar) watermark column to sessions table.
• Modify SegmentSession::handle() to skip frozen segments and only re-summarize from the active segment's start forward.
• Update AiSegmentSummarizer to accept an optional tail start ordinal and only pass events from that point.
• Update SegmentSummarizerAgent schema to include start_event_ordinal/end_event_ordinal (already present in JSON schema).
• Write tests simulating a growing session across two ingests, asserting settled segments are untouched.
• Run php artisan test and pint on changed files.
• Hand back branch with migration and Horizon reload note.

key decisions

• Preserve existing segment row IDs for frozen segments so EmbedChunks does not re-embed them.
• Add event ordinal columns to session_segments to freeze exact boundaries instead of relying on timestamps.
• Use a session-level frozen watermark (frozen_until_event_ordinal) to track the last frozen segment's end.
• Only re-summarize from the active segment's start forward; settled segments are immutable.
• Regenerate session-level roll-up summary cheaply from segment summaries, not raw events.

open questions

• Exact column name for the frozen watermark on sessions (e.g., frozen_until_event_ordinal vs last_frozen_event_ordinal).
• How to handle the case where the active segment is empty or no segments exist yet (first run).
• Whether the SegmentSummarizer interface needs a new method or an optional parameter for tail-only summarization.

next steps

• Merge into master after review.
• Run migrate on MAIN to add new columns.
• Graceful Horizon reload for updated SegmentSession job code.
• Optional: run flower:segment manually against a growing session to verify behavior.

key decisions

• Settled segments are frozen; only the active tail (from lastFrozenEndEventOrdinal) is re-summarized.
• Active segment row is updated in place; newly detected tail segments are appended.
• Session summary is regenerated cheaply by concatenating persisted segment summaries.
• Boundary columns added to model casts (integer) rather than separate table.
• EmbedChunks chunkable morph (session_segment) is unchanged; identity preserved via chunk ID.

open questions

—

next steps

• Fix the MCP recall_brief enum issue (invalid backing value 'feedback' for BriefOrigin).
• Re-attempt reading the canonical brief or rely on scratchpad spec.
• Read existing models (Chunk, ChunkEmbedding) and Meili service to design the prune command.
• Implement PruneOrphanedChunks command with dry-run, limit, type options.
• Add Segment delete cascade (observer or event) to clean up chunks when segment is deleted.
• Add scheduled reconcile command (e.g., prune-orphaned-chunks --autofix) for periodic cleanup.
• Write sqlite tests with faked Meili client.
• Commit on flower/prune-orphaned-chunks with Brief: #68 trailer.

key decisions

—

open questions

• Why does the MCP recall_brief fail with 'feedback' enum value? Is it a stale data issue or a code bug?
• What is the exact canonical brief text? (Scratchpad provides a good summary but may lack some details.)