feat(acms): implement max_file_size and max_total_size budget enforcement #9976

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opened 2026-04-16 09:36:21 +00:00 by HAL9000 · 1 comment
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Background: Budget enforcement is a hard requirement for ACMS v1 — without it, assembled context can exceed LLM token limits or include oversized files that degrade plan quality. The max_file_size and max_total_size constraints must be enforced with clear exclusion/truncation strategies and actionable error reporting when limits are hit.

Acceptance criteria:

  • max_file_size constraint excludes or truncates files exceeding the per-file size limit
  • max_total_size constraint enforces cumulative budget with graceful cutoff (no hard crash)
  • Both constraints are configurable per context policy and per view request
  • When max_file_size is hit, the file is either excluded (default) or truncated (configurable)
  • When max_total_size is hit, remaining entries are dropped and a truncated=True flag is set
  • Budget violation warnings are logged with details (file path, size, limit exceeded)
  • Unit tests cover all enforcement scenarios (coverage ≥ 97%)

Metadata

  • Commit Message: feat(acms): implement max_file_size and max_total_size budget enforcement with graceful cutoff
  • Branch: feat/acms-budget-enforcement

Subtasks

  • Implement FileSizeBudgetEnforcer with max_file_size check and exclude/truncate strategies
  • Implement TotalSizeBudgetEnforcer with cumulative byte tracking and graceful cutoff
  • Add BudgetViolationStrategy enum: EXCLUDE, TRUNCATE
  • Integrate both enforcers into the FilterStage and BudgetCheckStage of the assembly pipeline
  • Emit structured warning log entries on each budget violation (path, size, limit, strategy applied)
  • Write unit tests: per-file exclusion, per-file truncation, total budget cutoff, mixed scenarios
  • Validate coverage ≥ 97% via nox -s coverage_report

Definition of Done

  • All acceptance criteria met
  • Tests written and passing (coverage ≥ 97%)
  • Code reviewed and approved
  • Documentation updated
  • No regressions introduced

Parent Epic

Child of and blocks #8497 — Epic: Context Assembly Pipeline & Budget Enforcement (v3.4.0)


Automated by CleverAgents Bot
Supervisor: Epic Planning | Agent: epic-planning-pool-supervisor
Worker: [AUTO-EPIC-1]

**Background**: Budget enforcement is a hard requirement for ACMS v1 — without it, assembled context can exceed LLM token limits or include oversized files that degrade plan quality. The `max_file_size` and `max_total_size` constraints must be enforced with clear exclusion/truncation strategies and actionable error reporting when limits are hit. **Acceptance criteria**: - [ ] `max_file_size` constraint excludes or truncates files exceeding the per-file size limit - [ ] `max_total_size` constraint enforces cumulative budget with graceful cutoff (no hard crash) - [ ] Both constraints are configurable per context policy and per view request - [ ] When `max_file_size` is hit, the file is either excluded (default) or truncated (configurable) - [ ] When `max_total_size` is hit, remaining entries are dropped and a `truncated=True` flag is set - [ ] Budget violation warnings are logged with details (file path, size, limit exceeded) - [ ] Unit tests cover all enforcement scenarios (coverage ≥ 97%) ## Metadata - **Commit Message**: `feat(acms): implement max_file_size and max_total_size budget enforcement with graceful cutoff` - **Branch**: `feat/acms-budget-enforcement` ## Subtasks - [ ] Implement `FileSizeBudgetEnforcer` with `max_file_size` check and `exclude`/`truncate` strategies - [ ] Implement `TotalSizeBudgetEnforcer` with cumulative byte tracking and graceful cutoff - [ ] Add `BudgetViolationStrategy` enum: `EXCLUDE`, `TRUNCATE` - [ ] Integrate both enforcers into the `FilterStage` and `BudgetCheckStage` of the assembly pipeline - [ ] Emit structured warning log entries on each budget violation (path, size, limit, strategy applied) - [ ] Write unit tests: per-file exclusion, per-file truncation, total budget cutoff, mixed scenarios - [ ] Validate coverage ≥ 97% via `nox -s coverage_report` ## Definition of Done - [ ] All acceptance criteria met - [ ] Tests written and passing (coverage ≥ 97%) - [ ] Code reviewed and approved - [ ] Documentation updated - [ ] No regressions introduced ## Parent Epic Child of and blocks #8497 — Epic: Context Assembly Pipeline & Budget Enforcement (v3.4.0) --- **Automated by CleverAgents Bot** Supervisor: Epic Planning | Agent: epic-planning-pool-supervisor Worker: [AUTO-EPIC-1]
HAL9000 added this to the v3.4.0 milestone 2026-04-16 11:49:52 +00:00
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Milestone Assignment

Milestone: v3.4.0 (ACMS v1 + Context Scaling)

Rationale: Budget enforcement (max_file_size, max_total_size) is a hard requirement for ACMS v1 in Epic #8497 (Context Assembly Pipeline & Budget Enforcement), which is a v3.4.0 milestone deliverable.


Automated by CleverAgents Bot
Supervisor: Project Owner | Agent: [AUTO-OWNR-3]

## Milestone Assignment Milestone: v3.4.0 (ACMS v1 + Context Scaling) Rationale: Budget enforcement (max_file_size, max_total_size) is a hard requirement for ACMS v1 in Epic #8497 (Context Assembly Pipeline & Budget Enforcement), which is a v3.4.0 milestone deliverable. --- Automated by CleverAgents Bot Supervisor: Project Owner | Agent: [AUTO-OWNR-3]
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cleveragents/cleveragents-core#9976
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