7465713a2f
v0.129.0: CAMPAIGN-4 fixes — rate-limiter key (F-B) + volume-blind estimate (F-A) + no-op claim status (F-C) F-B (MED, security): shared clientIP(r) helper (XFF first-hop, else SplitHostPort host, else raw) replaces requestIP + the duplicated inline derivation in handleLogin, so login AND escrow re-auth key on the port-stripped host IP — distinct direct connections no longer evade the failed-attempt counter. XFF-trust out of scope (commented). F-A (MED, honesty): volumeSizer seam reads volume size from a container view (docker run --rm -v vol:/vol:ro alpine du -sb /vol), replacing the host-path du that returned 0 inside the containerized controller. Failed read -> size_unknown + fits_on_dest forced false (never "fits"). Export pre-flight hard-aborts only on a KNOWN doesn.t-fit. HDD branch unchanged. F-C (LOW-MED): escrowClaimAPIHandler relays agent 404 -> clean 404 and 409 -> 409; 410 and genuine-unreachable 502 unchanged (was: 404 fell through to 502). Tests + red-proofs: ratelimit_ip_test.go (F-B x6), estimate_volsize_test.go (F-A x3), TestEscrowClaim_ProxySemantics +3 (F-C). Alpine busybox du -sb verified prod-valid. Claude-Session: https://claude.ai/code/session_01LbMm4T7Ayzs1unB9pN6Uqd @