`headroom/transforms/text_compressor.py` was a regex-line-sampling
fallback that nothing in the runtime called. ContentRouter routes
`CompressionStrategy.TEXT` straight to the Kompress ML compressor at
`content_router.py:1046` — the comment there literally says 'Prefer
Kompress ML compressor for text'. The Python file was orphaned but
still imported by its own test class, making it look live in the 3e
queue.
Drops the 3e.3 port from the queue: there's nothing to port.
# Removed
* `headroom/transforms/text_compressor.py` (255 LOC, unused)
* `tests/test_text_compressors.py::TestTextCompressor` (3 tests)
* `text_compressor` mention in `error_detection.py` shim docstring
* `text_compressor` mention in `test_signals_keyword_parity.py` docstring
* `TextCompressor` mention in `bench_latency.py` scenario comment
# Kept (defensive)
The legacy marker regex in `ccr/tool_injection.py:213` stays — it
parses an even older TextCompressor output format (pre-2026), is
purely defensive, and removal buys nothing. Test references to that
format in `test_ccr_tool_injection.py` document the regex contract
and stay too.
# Test plan
* `make ci-precheck` clean
* `tests/test_text_compressors.py` 19 passes (was 22, dropped 3)
Two more tests broke after PR4's lossless-first default flip — same
root cause as the langchain/MCP fixes (#287's first patch):
- tests/test_proxy_ccr.py — TestEndToEndTOINIntegration asserts
CCR-cache state after compression. Lossless wins on the test
fixture and skips CCR entirely (nothing dropped). Pin to lossy
via with_compaction=False so the cache assertion holds.
- tests/test_text_compressors.py — TestSmartCrusherTextIntegration
asserts JSON-array shape round-trip. Lossless substitutes a
CSV+schema string. Pin to lossy + JSON shape via
with_compaction=False. Lossless coverage exists separately in
test_smart_crusher_lossless_default.py.
Same pattern, same fix. CI run that surfaced these:
actions/runs/25025876328
- Fix proxy crash when torch not installed: make kompress_compressor.py
imports lazy so `is_kompress_available()` works without [ml] extra
- Rewrite MCP server from 1 tool (retrieve-only) to 3 tools:
headroom_compress (on-demand compression, no proxy needed),
headroom_retrieve (local store first, proxy fallback),
headroom_stats (session stats + sub-agent aggregation + proxy cache)
- Add shared stats file (~/.headroom/session_stats.jsonl) so sub-agent
compression stats are visible from the main session
- Add mcp to [proxy] extras so proxy users get MCP tools automatically
- Remove dead TextCompressor from exports and pipeline (was never called)
- Update mcp install messaging to clarify proxy vs MCP roles
- Fix fcntl Windows compat, asyncio deprecation, httpx timeout race
Bump version to 0.4.6.
Add standalone text compression utilities that applications can use
explicitly for non-JSON content:
- SearchCompressor: for grep/ripgrep output (file:line:content format)
- LogCompressor: for build/test logs (pytest, npm, cargo output)
- TextCompressor: for generic plain text with anchor preservation
- detect_content_type: content type detection for routing decisions
Design decision: Text compression is OPT-IN, not automatic. SmartCrusher
continues to compress JSON automatically (structure-preserving, safe),
but passes non-JSON through unchanged. Applications decide when and how
to compress text content based on their specific needs.
This prevents lossy text compression from being applied automatically,
which could lose important context in coding tasks (e.g., root cause
errors in logs, critical matches in search results).
Includes 22 tests covering content detection, compression utilities,
and SmartCrusher pass-through behavior.
