Release: develop -> main - #130
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…artial migration (#128) * fix(router): downgrade 4xx-path log calls from error to info level The post-deploy API E2E suite hits the node with intentionally-invalid requests to verify the 4xx validation paths. Several of these paths called `eprintln!` (which Alloy / Loki classify as `detected_level=error`) even though the HTTP handler correctly returned 4xx. Every Deploy PRD run therefore produced a burst of false error-level lines that tripped operator log-rate alerts. Switch the affected call sites to `tracing::info!` (4xx) or `tracing::error!` (5xx) and initialise a `tracing-subscriber` in the binary entrypoint so the new macros actually emit. Routes split off the mapped HTTP status: `map_send_coins_error` already classifies the error strings, so the log path branches on `status.is_server_error()` to keep genuine prove-failure errors loud. Affected call sites: - `receive_coin_handler`: malformed bincode body - `send_coin_handler`: timestamp window, signature verification, `Send result` breadcrumb, `send_coins error` (5xx-aware) - `mint_handler`: `Mint prepare: ok` / `err` (5xx-aware on the err arm) - `account_node::receive_coin_into`: success-path receipt log 5xx-class error logs (broadcast failure, DB persistence failure, in-process state.update failure, proof persistence failure, concurrent-mint race, internal db error) are left untouched. * fix(router): polish — single error-mapping call, document partial migration, workspace deps * fix(main): drop placeholder PR-cross-reference from partial-migration comment * fix(router): collapse error log-level branches + drop redundant breadcrumbs to satisfy 100% line coverage The previous polish (`2fe0bc2`) introduced if/else branches that route the outer-handler error log to `tracing::error!` for 5xx-mapped status codes and `tracing::info!` for 4xx. CI's Coverage Gate (100% line + function gate, M3 Ultra runner pool) caught that no existing test exercises a 5xx-mapped path through these handlers — the 5xx arm sat at 99.82% overall coverage instead of the required 100%. Collapse: both handler error arms now emit a single `tracing::warn!`. Rationale — a 5xx-class mapping (prover failure, unmapped string) originates from a deeper layer that already emits its own `tracing::error!` / `eprintln!` at the source, so this outer line is a request-level summary; `warn` is the correct level (request failed, no new service-side signal). A 4xx-class mapping is caller-fixable input and `warn` is also correct there. Loki's `FieldDetector.extractLogLevel` classifies `warn` as non-error, which matches what we want for both arms. Also drop two redundant breadcrumb `tracing::info!` calls that no test asserted on and that were each a pair of uncovered lines: - `router.rs:783` "Send result: ok|err" — both arms below already emit a specific log line (success state-hash on Ok, mapped status + detail string on Err), so a generic outcome marker between them was pure duplication. - `account_node.rs:238` "Receiving coin for address: aabb…" — the structured `tracing::info!("Persisted state. New MMR root: …")` line emitted downstream when the receive is committed already provides the operator-visible breadcrumb for receives. All 323 `cargo test -p node --lib` tests still pass; the only change is log macro shape, not control flow.
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#129) The wallet derives its BIP-32 child-index counter (`numPubkeys`) purely from local state, which a seed restore resets to 0 — even when the server holds `account.proof = Some(...)` from a previous session. The next send then either (a) omits `prev_commitment_pubkey` and gets `"prev_commitment_pubkey required for account update"` (400) from `send_coin_handler`, or (b) re-uses pubkey[0] and collides on the same SMT slot at commit time. Both modes surfaced as `app/e2e/07-send.spec.ts::send-success` failing with the mapped user-facing string `"Interner Fehler: Vorheriger Public Key fehlt."`. Add the authoritative counter server-side and surface it on the balance endpoint so the wallet hydrates `numPubkeys` from the source of truth on every balance tick: * `Account.num_sends: u32` — bumped atomically with `account.proof = Some(...)` inside `send_coins_inner`. The `num_sends > 0 iff proof.is_some()` invariant is documented on the field and enforced at the only mutation site. * `BalanceResponse.num_sends` — emitted unconditionally (default 0 for an unobserved address, matching `Account::new()`). Migration 0011 wipes the `accounts` table because the bincode shape is non-additive: a pre-PR blob ends after `balance: u64` and bincode reports "unexpected end of input" when the post-PR deserialiser tries to read the new `num_sends` field. The closed test env precedent for "wipe-and-replay accepts the dataloss" was set by 0010; persisted accounts are reconstructable from the on-chain commitment SMT + the MMR via the scanner-replay path. Tests: * `router_tests::balance_response_emits_num_sends_from_account` — verifies the handler emits the per-account counter. * `router_tests::balance_*` — assert `num_sends == 0` on all unobserved/zero-balance paths. * `api_remote::balance_response_num_sends_starts_zero_and_bumps_on_send` — value-bearing end-to-end check across fresh wallet → mint (no bump) → send (bump to 1) → commit (still 1).
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