I'll review the code changes against the issue and observations.

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### ftl_project_expert/cli.py:_reasons_export
VERDICT: CONCERN
CORRECTNESS: QUESTIONABLE
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: ADDRESSES
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: UNTESTED
INTEGRATION: WIRED
REASONING: The switch from stdout-capture to `-o` flag fixes the core issue — large (3.9 MB) network exports piped through stdout could truncate or produce empty output due to pipe buffer limits. However, the old code was transactional from Python's side: `write_text()` only ran inside `if result.returncode == 0`. With `-o`, the `reasons` CLI writes the file directly during execution. If the command fails partway through, a partial/corrupt file may remain on disk. The `if result.returncode == 0` guard now only controls the echo message, not file creation. This is partially mitigated by the new error handling in `_load_network()`, but `_reasons_export()` is called from 6 sites, so a corrupt `network.json` left behind by a failed export could affect any subsequent reader before the next successful export.

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### ftl_project_expert/cli.py:_load_network
VERDICT: PASS
CORRECTNESS: VALID
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: ADDRESSES
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: UNTESTED
INTEGRATION: WIRED
REASONING: This is the main fix and it's well-structured. The function now: (1) uses `-o` flag for the fallback export, consistent with `_reasons_export`; (2) wraps `json.loads()` in try/except catching `JSONDecodeError`, `ValueError`, and `FileNotFoundError`; (3) emits a clear warning naming the file; (4) attempts a re-export as recovery before giving up. The function always returns a valid dict — either parsed data or `{"nodes": {}}` — so all 7 callers (some of which have their own try/except wrapping) remain correct. The `FileNotFoundError` catch handles TOCTOU races where the file could be deleted between the exists check and the read. The logic flow after the initial `if not network_path.exists()` block is sound: success falls through to the try block, failure returns early.

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### Overall: test coverage gap
VERDICT: CONCERN
CORRECTNESS: VALID
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: PARTIAL
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: UNTESTED
INTEGRATION: WIRED
REASONING: `_load_network` has 7 production callers and 0 test callers. The issue specifically describes a failure mode (corrupt/empty network.json on 10k+ node networks) that should be testable — e.g., writing an empty file, writing invalid JSON, removing the file between operations. The error handling paths (re-export fallback, double-failure fallback) have no test coverage. This is a resilience fix for a production failure; untested resilience code is a concern. The issue's suggestion #4 ("distinguish model failures from data loading failures" at line 1866) is not directly addressed, though it's less critical now since `_load_network()` no longer raises — `_derive_once`'s `except Exception` will only catch model-related errors.

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### SELF_REVIEW
LIMITATIONS: Could not verify whether the `reasons export -o` flag performs atomic writes (temp-file-then-rename) or direct writes — this determines whether the concern about partial files from `_reasons_export` is real. Could not verify the `reasons` CLI's `-o` behavior at all since no source or docs for it were provided. No test files were included in the diff or observations to verify coverage claims.

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### FEATURE_REQUESTS
- Include source or docs for external CLI tools (`reasons`) when changes depend on their flags (e.g., `-o` atomicity guarantees)
- When test_count is 0 for a modified function, include a note about whether the project has a test directory and testing conventions to contextualize the gap
