[P3.10] APIClient retry swallows non-connection request errors and loses the cause

[frankbria]

Severity: low | Category: correctness | Phase: P3.10

Problem

_request_with_retry only catches ConnectionError/Timeout; other RequestException types propagate unwrapped, and exhausted retries replace the real exception with a generic message.

Evidence

codeframe/cli/api_client.py:195

Acceptance criteria

Catch RequestException as fallback, wrap in APIError, and raise ... from last_exc.

Dependencies

None

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_{Filed from the SaaS launch-readiness audit. Atomic: one developer, one session. Work order: strictly P0.1 → P3.12 (no forward dependencies).}