P3-1 — ruff cleanup (93 → 28 errors, fixed 65)
Auto-fixed with 'ruff check . --fix'. Remaining 28 are intentional
E402 (module-level imports for circular-dep avoidance in mcp_server,
main.py, routers/airdrop.py, tests/) and F401 on plugin re-exports
(documented via __all__ in plugins/__init__.py). Will silence the
intentional E402s via per-file ruff overrides in a follow-up.
P3-4 — Fixed cli/verify_receipt.py missing 'timestamp' name
The script used 'timestamp' without importing 'time'.
P3-6 — Removed dead qrcode import in core/pdf.py
Was imported but never used.
P3-7 — Removed unused coincurve.ecdsa.recover in core/smart_wallet.py
Kept cdata import (used elsewhere).
P3-3 — Fixed missing 'os' import in core/hosting.py and core/smart_wallet.py
Both used os.getenv() without importing os.
P3-12 — Fixed generators that ran in nested f-string with same quotes
tests/test_address_vectors.py: xrp_path, xtz_priv, ton_priv, algo_priv,
nano_priv, fil_path were extracted to local variables so the test
passes on Python 3.10+ (the original test used 3.12 nested-quote
f-strings). All paths now use hardened derivation correctly for
SLIP-10 Ed25519.
P2-16 — chain_vault.py: Fixed _webhooks undefined names
Two endpoints (test_webhook, retry_webhook) iterated over a global
'_webhooks' list that never existed. Now uses _PersistentStore.all('webhooks')
consistent with the list_webhooks endpoint.
P3-11 — Removed stub imports from plugins/__init__.py
Added __all__ to document the re-exports as public plugin API.
P2-1 — generator.py: removed unused ecdsa.SigningKey + nacl imports
Generator doesn't use them anywhere; only nacl.bindings.crypto_sign_seed_keypair.
Refs: AUDIT.md P2-1, P2-16, P3-1..P3-7, P3-11, P3-12
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