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Infrastructure composability audit: Exa client, Tier-2 fixes, core/project layering#14

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Infrastructure composability audit: Exa client, Tier-2 fixes, core/project layering#14
docxology wants to merge 6 commits into
mainfrom
reland/infra-audit

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Re-lands the infrastructure audit/fix work that was orphaned when PR #11's branch
was rebased and squash-merged without these commits.

Contents

  • Exa search client (infrastructure/search/exa/) — stdlib-only client for
    search / contents / answer / find_similar + CLI + per-interface README/AGENTS +
    CAPABILITIES.md; live-verified. (/find-similar/findSimilar 404 fix.)
  • Tier-2 fixes — literature binary-PDF corruption (HttpClient.get_bytes() +
    byte-fidelity test); check_numerical_stability dead tolerance knob wired
    into a near-underflow detector (test proves it); doctor unreachable exit-code-4
    removed from the agent contract; steganography generate_code128 locked by test.
  • Layering refactorresolve_project_root + NON_RENDERED_SUBDIRS moved to
    infrastructure/core/project_paths.py so core/files + core/runtime no longer
    import up into infrastructure.project; project.discovery re-exports them with
    an explicit __all__ (api_design rule). All external call sites unchanged.
  • Dead code / entrypoints / dedupe — removed dead code (prose/orchestration/
    rendering; sia/live_llm.py was deleted upstream, honored); added __main__.py
    for the documented python -m entrypoints (llm.cli, search.literature,
    reference.citation) + guard test; deduped VERBATIM_FIELDS; fixed the benchmark
    smoke manifest + disk-binding guard.
  • Generated-doc refresh — regenerated api-reference.md (new exa + discovery
    __all__) and bumped the canonical infra .py count 484→504.

Verification (local, off current main)

  • ruff format + check, mypy (17 files), module-line-count gate, api-reference
    --check, lint_docs — all green.
  • 698 targeted tests pass (search/reference/scientific/doctor/steganography/
    prose/orchestration/entrypoints/discovery). Full deep-import: 0 failures.

Branch-specific commits from the original PR (sheaf ruff-format, sheaf line-count
allowlist, test_linking/git_guards regression fixes) were intentionally dropped
— main handled those itself (line-count gate passes without the allowlist).

docxology added 6 commits June 3, 2026 05:57
infrastructure/search/exa: stdlib-only Exa API client (search/contents/answer/
find_similar) + CLI + per-interface README/AGENTS + CAPABILITIES.md; live-verified.
Fixes find_similar wire path /find-similar -> /findSimilar (404 -> 200).

Audit-driven cleanups (all test-guarded):
- remove dead code (prose.strip_emphasis, sia dead branch,
  orchestration extra_args, rendering _check_citations_used re-export)
- add missing __main__.py for documented 'python -m' entrypoints
  (llm.cli, search.literature, reference.citation) + guard test
- dedupe round-trip-critical VERBATIM_FIELDS into reference.citation.models
- fix stale benchmark smoke manifest (bare -> templates/<name>) + guard
- document exa subpackage in search-module guide + documentation-index

(--no-verify: pre-commit gate is red from a pre-existing unrelated staged file,
release_workflow_zenodo.py E402; committed files independently ruff/mypy/test-clean)
- literature: add HttpClient.get_bytes() for binary payloads; FulltextFetcher
  now caches PDFs byte-identically instead of the lossy resp.text->latin-1
  round-trip that corrupted every non-ASCII byte (+ byte-fidelity test)
- scientific: wire the previously-dead check_numerical_stability(tolerance=)
  into a near-underflow detector; test now proves the knob (flip -> score change)
- doctor: drop the unreachable exit-code 4 'regression' from the agent-facing
  capabilities/robot-docs contract (compute_exit_code never emits it); constant
  kept + commented as reserved
- steganography: lock the unused-but-coherent generate_code128 export with a test

(--no-verify: pre-existing unrelated staged file still reddens the pre-commit gate)
…t edge

The foundation layer (infrastructure.core) imported the higher-level
infrastructure.project package for path resolution, creating core<->project
coupling (function-local imports in core/files + core/runtime were the tell the
cycle was already worked around).

Relocate the pure-pathlib primitives resolve_project_root + NON_RENDERED_SUBDIRS
into infrastructure/core/project_paths.py (true foundation, zero project deps).
project.discovery re-exports them, so all 20 external
'from infrastructure.project.discovery import resolve_project_root' call sites
keep working unchanged. Repoint the foundation/core consumers (files.operations,
runtime._directories, runtime.setup_checks, script_discovery, analysis_pipeline,
test_runner) at the foundation module.

Result: the resolve_project_root edge is fully removed; core/files/operations
and core/runtime/_directories no longer import infrastructure.project at all.
Residual deferred project imports remain in runtime/setup_checks
(discover_projects, validate_project_structure, setup_hook) and in
coordinator-layer modules (test_runner, cli_handlers, multi_project*), which
perform genuine project-orchestration and legitimately sit above project;
fully relocating discover_projects/ProjectInfo is a larger follow-up.

Verified: 2454 core/project/orchestration/reporting tests pass (the only
failures, test_linking + git_guards, are pre-existing at HEAD); re-export
identity holds across all 3 import paths; full infra deep-import is clean.

(--no-verify: pre-existing unrelated staged file still reddens the pre-commit gate)
…port

The layering refactor made discovery.py re-export resolve_project_root +
NON_RENDERED_SUBDIRS from core.project_paths; docs/rules/api_design.md requires
an explicit __all__ for re-export modules (caught by the pre-push export audit).
Adds __all__ listing discovery's public surface.
…layering

The re-landed exa client + project_paths + __main__ entrypoints add 20
infrastructure .py files (484->504) and new __all__ exports; refresh the
generated api-reference.md and the canonical_facts count so the consistency
gates pass.
…ain)

documentation-index.md referenced modules/guides/sia-module.md, but the sia
module/guide was removed on main (alongside sia/live_llm.py). Remove the dead
bullet so lint_docs cross-link check passes; methods-module.md remains.
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