> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase26-session01-graph-data-contracts-seed-fixtures/tasks.md).

# Task Checklist

**Session ID**: `phase26-session01-graph-data-contracts-seed-fixtures` **Total Tasks**: 20 **Estimated Duration**: 3-4 hours **Created**: 2026-06-09

***

## Legend

* `[x]` = Completed
* `[ ]` = Pending
* `[P]` = Parallelizable (can run with other \[P] tasks)
* `[SNNMM]` = Session reference (NN=phase number, MM=session number)
* `TNNN` = Task ID

***

## Progress Summary

| Category       | Total  | Done   | Remaining |
| -------------- | ------ | ------ | --------- |
| Setup          | 3      | 3      | 0         |
| Foundation     | 5      | 5      | 0         |
| Implementation | 7      | 7      | 0         |
| Testing        | 5      | 5      | 0         |
| **Total**      | **20** | **20** | **0**     |

***

## Setup (3 tasks)

Initial configuration and environment preparation.

* [x] T001 \[S2601] Verify Phase 25 completion, reference graph availability, and local parser/test patterns (`.spec_system/PRD/phase_26/session_01_graph_data_contracts_seed_fixtures.md`)
* [x] T002 \[S2601] Create Knowledge Graph seed data directory for checked-in registry and graph files (`src/data/graphs/`)
* [x] T003 \[S2601] Capture graphify wire-shape assumptions in the contract module before parser implementation (`src/lib/knowledge-graph-types.ts`)

***

## Foundation (5 tasks)

Core structures and base implementations.

* [x] T004 \[S2601] Define graph node, link, graph metadata, and confidence types with types matching declared contract and exhaustive enum handling (`src/lib/knowledge-graph-types.ts`)
* [x] T005 \[S2601] Define registry entry, god-node, demo provenance, and savings estimate types with types matching declared contract and exhaustive enum handling (`src/lib/knowledge-graph-types.ts`)
* [x] T006 \[S2601] Implement shared parser helpers and a dedicated parse error with schema-validated input and explicit error mapping (`src/lib/knowledge-graph-types.ts`)
* [x] T007 \[S2601] Implement graph parser for nodes, links, duplicate ids, confidence, and optional metadata with schema-validated input and explicit error mapping (`src/lib/knowledge-graph-types.ts`)
* [x] T008 \[S2601] Implement registry parser for entries, colors, counts, god nodes, and graph paths with schema-validated input and explicit error mapping (`src/lib/knowledge-graph-types.ts`)

***

## Implementation (7 tasks)

Main feature implementation.

* [x] T009 \[S2601] Implement legacy/partial graph normalization with required-field rejection and bounded optional defaults (`src/lib/knowledge-graph-types.ts`)
* [x] T010 \[S2601] Implement graph metadata and savings estimate helpers with deterministic ordering and bounded numeric output (`src/lib/knowledge-graph-types.ts`)
* [x] T011 \[S2601] \[P] Create parser-backed demo graph and registry fixtures with explicit demo provenance labels (`src/lib/knowledge-graph-demo-data.ts`)
* [x] T012 \[S2601] \[P] Create the checked-in AI OS seed registry with workspace-relative `graphPath` and parse-ready counts (`src/data/graphs/index.json`)
* [x] T013 \[S2601] Create the checked-in AI OS self-graph seed in graphify NetworkX node-link shape (`src/data/graphs/ai-os.json`)
* [x] T014 \[S2601] Wire demo fixture exports through the public parsers so malformed demo data fails during import/test (`src/lib/knowledge-graph-demo-data.ts`)
* [x] T015 \[S2601] Review and finalize public parser/type exports for later bridge, hook, renderer, and Hermes grounding sessions (`src/lib/knowledge-graph-types.ts`)

***

## Testing (5 tasks)

Verification and quality assurance.

* [x] T016 \[S2601] \[P] Write valid minimal, seed registry, seed graph, and demo fixture parse tests (`src/lib/__tests__/knowledge-graph-types.test.ts`)
* [x] T017 \[S2601] \[P] Write malformed graph and malformed registry rejection tests with explicit parse-error assertions (`src/lib/__tests__/knowledge-graph-types.test.ts`)
* [x] T018 \[S2601] \[P] Write normalization, metadata, duplicate-id, and savings estimate tests (`src/lib/__tests__/knowledge-graph-types.test.ts`)
* [x] T019 \[S2601] Run focused Vitest and TypeScript verification for the new contract surface (`src/lib/__tests__/knowledge-graph-types.test.ts`)
* [x] T020 \[S2601] Validate ASCII encoding, Unix LF endings, and JSON parse compatibility for new graph artifacts (`src/data/graphs/index.json`)

***

## Completion Checklist

Before marking session complete:

* [x] All tasks marked `[x]`
* [x] All tests passing
* [x] All files ASCII-encoded
* [x] implementation-notes.md updated
* [x] Ready for the validate workflow step

***

## Next Steps

Run the implement workflow step to begin AI-led implementation.


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