fix(tesla_vehicle): recover missing SoC with bounded telemetry wakes

[frahlg]

Missing SoC, partial HTTP 200 and old cached payloads now trigger a bounded telemetry wake/read instead of waiting for the 30-minute startup cadence. The driver uses the dedicated wake_up endpoint, which vehicle_data cache hits cannot bypass, and keeps the BMS timestamp instead of renewing SoC at HTTP receipt.

Core saves the wake budget by hardware identity before a request: at least 90 seconds between attempts, at most three per 30-minute window. Restart and rename do not restore it. The driver keeps the three-minute 408/503 backoff and rejects unsuccessful wake results even with HTTP 200. Telemetry recovery never sends charge_start; its existing charging path remains separate.

Requires the paired Core change for unix_ms, reserve_vehicle_wake, source timestamps and a refresh recipient independent of fresh SoC. Hosts without the new functions do not run recovery or treat an unknown source age as fresh. This remains beta; no physical Tesla BLE recovery test has run.

Refs srcfl/ftw#1253. Paired with srcfl/ftw#1521. Core #1449 already owns the bundle pin; reconcile that pin after the driver merge before publishing a beta with this fix.

Validation: make test-driver ID=tesla_vehicle; make check (4,810 passed, 923 skipped); the recovery harness also passes under a double-precision Lua interpreter. It covers cold start, missing/old/invalid source data, empty/partial/invalid HTTP 200, HTTP failures, 408/503, saved restart budget, wake-only goal refresh and rejected wake responses. A local probe also loaded this exact source in Core's gopher-lua runtime against a fake proxy and state DB: missing/old SoC recovered to 100%, repeated cache did not renew source time, and rename did not add a wake.

[chatgpt-codex-connector]

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