story(issue-88): dry-run file-library agent end-to-end on X-Plane DSF by Zaba505 · Pull Request #94 · z5labs/ai

Zaba505 · 2026-05-04T02:50:54Z

Summary

Iteration-1 workspace for the autonomous file-library orchestrator against the X-Plane DSF binary spec (issue story(file-library): dry-run file-library agent end-to-end on X-Plane DSF format #88).
Result: stuck-exit at Gate (b) with 50 true-positive blockers — DSF's surface area (24 atoms + planar-numeric RLE + 30+ command opcodes) exceeds a single 15-iteration budget. _state_of_play.md captures a 6-step decomposition for completing it across multiple smaller runs.
Real-world DSF round-trips byte-equal at the Atom-as-opaque-[]byte level (152,976-byte X-Plane tile, TestRoundTripFromTestdata PASS). Fixture is X-Plane-licensed and gitignored; only the test wiring is committed.
Friction filed as story(extract-binary-spec): add html2text/lynx to Phase 1 HTML→text fallback table #91, story(extract-binary-spec): strip vendor HTML chrome (nav/sidebar/footer/auto-TOC) before extraction #92, story(file-library): early "spec too large; re-scope" signal based on audit-blocker count vs remaining iteration budget #93. Spec ambiguities (typos, undefined edges in the X-Plane spec itself) live in SPEC.md / structures/*.md as > **Ambiguity:** callouts for human review on follow-up runs.

Test plan

(cd plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf && go test -race -v ./...) — 30 tests pass (29 from iteration-1 + the new TestRoundTripFromTestdata)
git check-ignore … testdata/dsf-real-world.dsf confirms the licensed fixture is excluded from commit
Reviewer reproduces the round-trip locally by dropping any X-Plane .dsf at …/testdata/dsf-real-world.dsf and running the test

Splits from story(file-library): autonomous orchestrator agent for end-to-end file library implementation #20 (orchestrator agent shipped there)
Follow-up issues filed from this run: story(extract-binary-spec): add html2text/lynx to Phase 1 HTML→text fallback table #91, story(extract-binary-spec): strip vendor HTML chrome (nav/sidebar/footer/auto-TOC) before extraction #92, story(file-library): early "spec too large; re-scope" signal based on audit-blocker count vs remaining iteration budget #93
Continuation of DSF implementation tracked in _state_of_play.md (multi-run; not split into separate issues since the workspace tree is the audit trail)

🤖 Generated with Claude Code

Iteration-1 workspace for the autonomous file-library orchestrator against the X-Plane DSF binary spec. Result: stuck-exit at Gate (b) with 50 true blockers (per-atom payload typing, planar-numeric RLE, 30+ command opcodes) — scope larger than 15-iteration budget. Top-level Atom envelope round-trips byte-equal on a real 152KB X-Plane DSF tile. Friction filed as #91 (extract-binary-spec html2text fallback), #92 (extract-binary-spec HTML chrome stripping), #93 (file-library early "spec too large" signal). Spec ambiguities live in SPEC.md / structures/*.md for human review on follow-up runs. Real-world fixture excluded by .gitignore (X-Plane license). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Copilot

Pull request overview

This PR adds the iteration-1 audit trail for dry-running the file-library agent against the X-Plane DSF binary format, including the generated DSF package scaffold/spec artifacts and the first implementation pass for the top-level container. It fits into the codebase as a validation workspace for issue #88, intended to show where the autonomous file-library workflow succeeds and where it still needs follow-up improvements.

Changes:

Adds a generated DSF binary file-library package with initial types, decoder, encoder, and tests for header/atom/footer round-tripping.
Commits extracted DSF spec artifacts, including structure docs, encoding tables, and worked examples.
Records the dry-run outcome, iteration log, audit, state-of-play handoff, and eval metadata for follow-up work.

Reviewed changes

Copilot reviewed 49 out of 50 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
`plugins/file-library/agents/file-library-workspace/iteration-1/findings.md`	Summarizes the DSF dry-run results, blockers, and follow-up issues.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/types.go`	Defines initial DSF container types, placeholder enum, and error types.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/types_test.go`	Tests basic type helpers and error-chain behavior.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/decoder.go`	Implements initial whole-file decode for header, opaque atoms, and MD5 footer.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/decoder_test.go`	Verifies happy-path and failure-path decode cases.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/encoder.go`	Implements initial encode for header, opaque atoms, and MD5 footer.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/encoder_test.go`	Tests encode behavior, round-trips, and a real-world fixture path.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/doc.go`	Adds package-level DSF documentation.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/go.mod`	Declares the generated DSF module and test dependency.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/go.sum`	Locks module dependencies for the generated package.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/SPEC.md`	Adds the extracted DSF binary spec index and conventions.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/CLAUDE.md`	Captures package-specific implementation/testing guidance.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/AUDIT.md`	Records the formal coverage audit for the iteration-1 implementation.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/_state_of_play.md`	Documents the stuck handoff and suggested decomposition for future runs.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/_iteration_log.md`	Logs the dry-run phases and iteration progress.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/partition_plan.md`	Captures the iteration-1 partitioning decision.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/examples/minimal.md`	Adds the minimal DSF worked example.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/examples/typical.md`	Adds the typical DSF worked example.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/examples/complex.md`	Adds the complex DSF worked example.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/atom.md`	Documents the generic DSF atom envelope.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/atom-of-atoms.md`	Documents container atoms with nested atom payloads.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/file-header.md`	Documents the DSF file header.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/footer.md`	Documents the MD5 footer.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/head-atom.md`	Documents the top-level `HEAD` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/prop-atom.md`	Documents the `PROP` sub-atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/defn-atom.md`	Documents the `DEFN` atom and definition-table children.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/tert-atom.md`	Documents the `TERT` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/objt-atom.md`	Documents the `OBJT` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/poly-atom.md`	Documents the `POLY` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/netw-atom.md`	Documents the `NETW` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/demn-atom.md`	Documents the `DEMN` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/geod-atom.md`	Documents the `GEOD` atom and pool/scaler pairing rules.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/pool-atom.md`	Documents the `POOL` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/scal-atom.md`	Documents the `SCAL` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/po32-atom.md`	Documents the `PO32` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/sc32-atom.md`	Documents the `SC32` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/dems-atom.md`	Documents the `DEMS` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/demi-atom.md`	Documents the `DEMI` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/demd-atom.md`	Documents the `DEMD` atom.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/string-table-atom.md`	Documents DSF string-table payload encoding.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/planar-numeric-atom.md`	Documents planar numeric payloads and RLE/differencing rules.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/cmds-atom.md`	Documents the `CMDS` atom framing.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/structures/command.md`	Documents per-opcode command payload layouts.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/encoding-tables/atom-ids.md`	Adds the DSF atom ID lookup table.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/encoding-tables/command-opcodes.md`	Adds the DSF command opcode table.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/encoding-tables/plane-encodings.md`	Adds the planar encoding tag table.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/encoding-tables/dem-flags.md`	Adds the DEM flag table.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/dsf/encoding-tables/patch-flags.md`	Adds the terrain patch flag table.
`plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/eval_metadata.json`	Stores eval inputs, fixture metadata, and acceptance criteria.
`plugins/file-library/agents/file-library-workspace/iteration-1/.gitignore`	Ignores local DSF fixture files under testdata.

+| 0x54–0x57 | DEFN.Size | `0x0000001F` (31) | 8-byte header + 23-byte `TERT`. |
+| 0x58–0x5B | TERT.ID | `'TERT'` | Terrain definition table. |
+| 0x5C–0x5F | TERT.Size | `0x00000017` (23) | 8-byte header + 15-byte payload. |
+| 0x60–0x6B | TERT payload | `terrain/grass.ter\0` | 12 ASCII bytes + NUL = 13. (Note: writer rounds to 15 here for alignment-free padding; spec doesn't require padding.) |
+| 0x6C–0x6F | GEOD.ID | `'GEOD'` | Coordinate pools container. |
+| 0x70–0x73 | GEOD.Size | `0x00000018` (24) | 8-byte header + 16-byte `POOL`. (No `SCAL` in this minimal pool example for brevity — see ambiguity below.) |


+# Typical DSF: one terrain definition, one POOL/SCAL pair, one triangle
+
+A DSF that exercises the common path used by every real-world tile that
+contains terrain:
+
+- `HEAD/PROP` with the four required edge properties.
+- `DEFN/TERT` with one terrain definition (`terrain/grass.ter`).
+- `GEOD` with one `POOL` (uint16, 1 plane, raw encoded, 3 elements) plus
+  the matching `SCAL` (1 plane → 2 floats: multiplier `1.0` and offset
+  `0.0`). For brevity, the example uses a *placeholder* coordinate pool —
+  real DSFs would store at least lat/lon (2 planes); the decoder doesn't
+  reject under-dimensioned pools, only the X-Plane consumer does.


+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+
+			data, err := os.ReadFile(filepath.Join("testdata", tc.fixture))


+  "format_hint": "binary",
+  "target_parent_dir": "plugins/file-library/agents/file-library-workspace/iteration-1/eval-0-dsf-binary/outputs/",
+  "real_world_fixture": {
+    "path": "/home/carson/Downloads/+40-080.dsf",


+}
+
+// writeFile writes a complete DSF file: header, atoms, MD5 footer.
+func (e *encoder) writeFile(f *File) error {


+This example does not include a fully byte-accurate hex dump — the file is
+about 280 bytes and a real implementer round-trips it via the encoder
+rather than hand-crafting it. The structural decomposition below is what
+the spec requires.


Zaba505 self-assigned this May 4, 2026

Zaba505 added the enhancement New feature or request label May 4, 2026

Zaba505 requested a review from Copilot May 4, 2026 02:53

Copilot started reviewing on behalf of Zaba505 May 4, 2026 02:54 View session

Copilot AI reviewed May 4, 2026

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story(issue-88): dry-run file-library agent end-to-end on X-Plane DSF#94

story(issue-88): dry-run file-library agent end-to-end on X-Plane DSF#94
Zaba505 wants to merge 1 commit into
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worktree-issue-88

Zaba505 commented May 4, 2026

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Zaba505 commented May 4, 2026

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