feat(acms): add skeleton compressor #194

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opened 2026-02-22 23:40:00 +00:00 by freemo · 4 comments
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Metadata

  • Commit Message: feat(acms): add skeleton compressor
  • Branch: feature/m6-acms-skeleton-compress

Background

The skeleton compressor produces compressed inherited context using skeleton_ratio to control compression level. Output integrates into subplan context inheritance and strategy coordinator budgets. Compressed fragments maintain stable ordering to avoid non-deterministic payloads.

Acceptance Criteria

  • Implement skeleton compressor that produces compressed inherited context with skeleton_ratio.
  • Integrate skeleton output into subplan context inheritance and strategy coordinator budgets.
  • Add stable ordering for compressed fragments to avoid non-deterministic context payloads.
  • Persist skeleton metadata (ratio, token counts, source decision IDs) for auditability.
  • Add skeleton_ratio validation (0.0-1.0) and default handling per plan.

Definition of Done

This issue is complete when:

  • All subtasks below are completed and checked off.
  • A Git commit is created where the first line of the commit message matches
    the Commit Message in Metadata exactly, followed by a blank line, then
    additional lines providing relevant details about the implementation. The
    commit body should be appropriate in size for a commit message and relatively
    complete in describing what was done.
  • The commit is pushed to the remote on the branch matching the Branch in
    Metadata exactly.
  • The commit is submitted as a pull request to master, reviewed, and
    merged before this issue is marked done.

Subtasks

  • Implement skeleton compressor that produces compressed inherited context with skeleton_ratio.
  • Integrate skeleton output into subplan context inheritance and strategy coordinator budgets.
  • Add stable ordering for compressed fragments to avoid non-deterministic context payloads.
  • Persist skeleton metadata (ratio, token counts, source decision IDs) for auditability.
  • Add skeleton_ratio validation (0.0-1.0) and default handling per plan.
  • Add compression summary (original tokens vs compressed tokens) stored in plan metadata.
  • Add docs/reference/skeleton_compressor.md with ratios and examples.
  • Add example of skeleton output for a multi-decision plan.
  • Tests (Behave): Add features/skeleton_compressor.feature for compression thresholds.
  • Tests (Robot): Add robot/skeleton_compressor.robot smoke tests.
  • Tests (ASV): Add benchmarks/skeleton_compressor_bench.py for compression overhead.
  • Verify coverage >=97% via nox -s coverage_report. If coverage is <97% then review the current unit test coverage report at build/coverage.xml and use it to write new Behave based unit tests to improve code coverage. Specifically, write Behave style unit tests that are descriptively named and specifically improves coverage on whichever file has the most uncovered lines by writing tests that will target the uncovered lines in the report. Once that is done rerun nox -s coverage_report to verify all tests pass and coverage is above >=97%. Only mark this as complete once coverage is >=97%, if not repeat this task as many times as is needed until coverage reaches >=97%.
  • Run nox (all default sessions, including benchmark), fix any errors if needed ensuring nox passes across entire code base, do not ignore any failure even if it seems unrelated to this commit, fix it.

Section: #### M5: ACMS v1 + Context Scaling (Day 26)
Status: Open

## Metadata - **Commit Message**: `feat(acms): add skeleton compressor` - **Branch**: `feature/m6-acms-skeleton-compress` ## Background The skeleton compressor produces compressed inherited context using `skeleton_ratio` to control compression level. Output integrates into subplan context inheritance and strategy coordinator budgets. Compressed fragments maintain stable ordering to avoid non-deterministic payloads. ## Acceptance Criteria - [ ] Implement skeleton compressor that produces compressed inherited context with `skeleton_ratio`. - [ ] Integrate skeleton output into subplan context inheritance and strategy coordinator budgets. - [ ] Add stable ordering for compressed fragments to avoid non-deterministic context payloads. - [ ] Persist skeleton metadata (ratio, token counts, source decision IDs) for auditability. - [ ] Add `skeleton_ratio` validation (0.0-1.0) and default handling per plan. ## Definition of Done This issue is complete when: - All subtasks below are completed and checked off. - A Git commit is created where the **first line** of the commit message matches the Commit Message in Metadata exactly, followed by a blank line, then additional lines providing relevant details about the implementation. The commit body should be appropriate in size for a commit message and relatively complete in describing what was done. - The commit is pushed to the remote on the branch matching the **Branch** in Metadata exactly. - The commit is submitted as a **pull request** to `master`, reviewed, and **merged** before this issue is marked done. ## Subtasks - [ ] Implement skeleton compressor that produces compressed inherited context with `skeleton_ratio`. - [ ] Integrate skeleton output into subplan context inheritance and strategy coordinator budgets. - [ ] Add stable ordering for compressed fragments to avoid non-deterministic context payloads. - [ ] Persist skeleton metadata (ratio, token counts, source decision IDs) for auditability. - [ ] Add `skeleton_ratio` validation (0.0-1.0) and default handling per plan. - [ ] Add compression summary (original tokens vs compressed tokens) stored in plan metadata. - [ ] Add `docs/reference/skeleton_compressor.md` with ratios and examples. - [ ] Add example of skeleton output for a multi-decision plan. - [ ] Tests (Behave): Add `features/skeleton_compressor.feature` for compression thresholds. - [ ] Tests (Robot): Add `robot/skeleton_compressor.robot` smoke tests. - [ ] Tests (ASV): Add `benchmarks/skeleton_compressor_bench.py` for compression overhead. - [ ] Verify coverage >=97% via `nox -s coverage_report`. If coverage is <97% then review the current unit test coverage report at `build/coverage.xml` and use it to write new Behave based unit tests to improve code coverage. Specifically, write Behave style unit tests that are descriptively named and specifically improves coverage on whichever file has the most uncovered lines by writing tests that will target the uncovered lines in the report. Once that is done rerun `nox -s coverage_report` to verify all tests pass and coverage is above >=97%. Only mark this as complete once coverage is >=97%, if not repeat this task as many times as is needed until coverage reaches >=97%. - [ ] Run `nox` (all default sessions, including benchmark), fix any errors if needed ensuring nox passes across **entire** code base, do not ignore any failure even if it seems unrelated to this commit, fix it. **Section**: #### M5: ACMS v1 + Context Scaling (Day 26) **Status**: Open
freemo added this to the v3.4.0 milestone 2026-02-22 23:40:00 +00:00
freemo self-assigned this 2026-02-22 23:40:00 +00:00
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Expected completion updated (Day 15 rebaseline): Day 35 / 2026-03-15 (previously Day 31 / 2026-03-11)

**Expected completion updated (Day 15 rebaseline):** Day 35 / 2026-03-15 (previously Day 31 / 2026-03-11)
freemo added the due date 2026-03-09 2026-02-23 18:41:39 +00:00
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Implementation Summary — Skeleton Compressor (#194)

Files Created

  • src/cleveragents/domain/models/core/skeleton_metadata.py — Frozen SkeletonMetadata Pydantic model (ratio, original_tokens, compressed_tokens, source_decision_ids)
  • src/cleveragents/application/services/skeleton_compressor.pySkeletonCompressorService with ContextFragment, CompressionResult, and DEFAULT_SKELETON_RATIO
  • docs/reference/skeleton_compressor.md — Reference documentation with ratio table, algorithm, metadata schema, and multi-decision plan example
  • features/skeleton_compressor.feature — 22 BDD scenarios covering all compression behaviors
  • features/steps/skeleton_compressor_steps.py — Step definitions
  • robot/skeleton_compressor.robot — 6 Robot Framework smoke tests
  • robot/helper_skeleton_compressor.py — Robot helper script
  • benchmarks/skeleton_compressor_bench.py — ASV benchmarks at 10/100/1000 fragment scales

Files Modified

  • src/cleveragents/domain/models/core/plan.py — Added optional skeleton_metadata field and CLI dict rendering
  • src/cleveragents/domain/models/core/__init__.py — Exported SkeletonMetadata
  • src/cleveragents/application/services/__init__.py — Exported new service symbols
  • src/cleveragents/application/container.py — Registered skeleton_compressor_service (Singleton)
  • vulture_whitelist.py — Added entries for new public API
  • CHANGELOG.md — Added entry

Quality Gates

  • Lint: All checks passed
  • Typecheck: 0 errors, 0 warnings (Pyright strict)
  • Unit Tests: 22/22 skeleton scenarios pass; 0 failures introduced
  • Integration Tests: 6/6 Robot tests pass; 0 failures introduced
  • Coverage: 97% overall (threshold met)
  • Benchmarks: All suites validate correctly

Key Decisions

  • Frozen (immutable) SkeletonMetadata prevents accidental mutation after persistence
  • Deterministic fragment ordering via stable sort (relevance desc, fragment_id asc)
  • Greedy token-budget selection mirrors specification intent
  • Ratio semantics: 0.0=pass-through, 1.0=max compression, default=0.3
## Implementation Summary — Skeleton Compressor (#194) ### Files Created - `src/cleveragents/domain/models/core/skeleton_metadata.py` — Frozen `SkeletonMetadata` Pydantic model (ratio, original_tokens, compressed_tokens, source_decision_ids) - `src/cleveragents/application/services/skeleton_compressor.py` — `SkeletonCompressorService` with `ContextFragment`, `CompressionResult`, and `DEFAULT_SKELETON_RATIO` - `docs/reference/skeleton_compressor.md` — Reference documentation with ratio table, algorithm, metadata schema, and multi-decision plan example - `features/skeleton_compressor.feature` — 22 BDD scenarios covering all compression behaviors - `features/steps/skeleton_compressor_steps.py` — Step definitions - `robot/skeleton_compressor.robot` — 6 Robot Framework smoke tests - `robot/helper_skeleton_compressor.py` — Robot helper script - `benchmarks/skeleton_compressor_bench.py` — ASV benchmarks at 10/100/1000 fragment scales ### Files Modified - `src/cleveragents/domain/models/core/plan.py` — Added optional `skeleton_metadata` field and CLI dict rendering - `src/cleveragents/domain/models/core/__init__.py` — Exported `SkeletonMetadata` - `src/cleveragents/application/services/__init__.py` — Exported new service symbols - `src/cleveragents/application/container.py` — Registered `skeleton_compressor_service` (Singleton) - `vulture_whitelist.py` — Added entries for new public API - `CHANGELOG.md` — Added entry ### Quality Gates - **Lint**: All checks passed - **Typecheck**: 0 errors, 0 warnings (Pyright strict) - **Unit Tests**: 22/22 skeleton scenarios pass; 0 failures introduced - **Integration Tests**: 6/6 Robot tests pass; 0 failures introduced - **Coverage**: 97% overall (threshold met) - **Benchmarks**: All suites validate correctly ### Key Decisions - Frozen (immutable) SkeletonMetadata prevents accidental mutation after persistence - Deterministic fragment ordering via stable sort (relevance desc, fragment_id asc) - Greedy token-budget selection mirrors specification intent - Ratio semantics: 0.0=pass-through, 1.0=max compression, default=0.3
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Closing: code merged to master via commit 711e8671 (feat(acms): add skeleton compressor, 2026-03-03). Duplicate tracking issue #525 was also created and closed for this same work.

Closing: code merged to master via commit `711e8671` (feat(acms): add skeleton compressor, 2026-03-03). Duplicate tracking issue #525 was also created and closed for this same work.
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Resolved by PR #525

Resolved by PR #525
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2026-03-09

Blocks
#396 Epic: ACMS Context Pipeline
cleveragents/cleveragents-core
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cleveragents/cleveragents-core#194
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