fix: agent OTLP receiver max_recv_msg_size_mib=64 (was silently dropping high-cardinality batches) - #351
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PR #112 (freshness probe cache) and PR #350 (storage routing cumulative) both flagged producer→agent gRPC failures with high-cardinality batches: rpc error: code = ResourceExhausted desc = grpc: received message after decompression larger than max (X vs. 4194304) The gateway already has `max_recv_msg_size_mib: 64` (controller emit at stage_config.rs:428 + the corresponding gateway placeholder), but the AGENT receiver inherits the 4 MiB grpc default. With 5K series × 500 user_ids on the new HLL workload, batches exceed 4 MiB and the agent silently drops them — no metric flow → no sketch state → no probe data. Three sites: - `deploy/configs/asap-otel-agent-b6-asap-single-sketch.yaml` (static placeholder loaded via volume mount) - `controller/src/config/stage_config.rs:128` (typed Edge emit, the legacy single-pipeline arm) - `controller/src/config/stage_config.rs:852` (typed Edge emit, the 5-sketch routing-connector arm) OTAP variant (`stage_config_otap.rs`) uses a different listener_addr shape; left untouched — needs a separate look. Refs #46. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Producer→agent gRPC failures with high-cardinality HLL batches (5K series × 500 user_ids) > 4 MiB default cap. Both PR #112 and #350 flagged this. Three sites (static placeholder + 2 typed-emit arms in stage_config.rs).