Sync upstream v11.2.7 (merge conflicts)

[JOY (JOY)]

Upstream Sync - v11.2.7

Auto-merge with upstream v11.2.7 failed. Version/workflow conflicts were auto-resolved,
but the following files have code conflicts that need manual resolution:

docker-compose/envs/common-blockscout.env
mix.lock

To resolve:

1. Check out this branch locally
2. Resolve remaining conflicts
3. Push and merge this PR
4. Then create tag v11.2.7 to trigger Docker build

Upstream release notes

---

Note

High Risk
Touches core transaction API loading, fee/state-change accounting, proxy-implementation caching, and the HTTP client used on the API critical path. Mis-preloads or pool/cache TTL mistakes can change API payloads or hide proxy data.

Overview
v11.2.7 adds GET /api/v2/transactions/{hash}/preview for OG/social embeds (status, timestamp, method, from/to), with opt-in preload_ens, preload_metadata, and decode_input.

API latency: ENS and metadata preloads now run concurrently through a new Finch-based HttpClient with separate short vs proxied pools (MICROSERVICE_HTTP_POOL_SIZE / COUNT). Transaction details load participants in one deduped pass, skip ABIs except on to when decoding needs them, batch address tags, and collapse address existence checks into a single query. Contract method lookups and empty verified-non-proxy implementation probes get longer caches (CONTRACT_PROXY_EMPTY_IMPLEMENTATION_DATA_CACHE_TTL).

Eden: sponsored txs attribute fees to the fee payer and credit batched call recipients in state changes; interpretation requests include fee_payer and calls. Indexer also extracts those addresses for coin-balance tracking.

^{Reviewed by Cursor Bugbot for commit 7a4a0a8. Bugbot is set up for automated code reviews on this repo. Configure here.}

[chatgpt-codex-connector]

You have reached your Codex usage limits for code reviews. You can see your limits in the Codex usage dashboard.

[gemini-code-assist]

Code Review

This pull request upgrades Blockscout to version 11.2.7, introduces a lightweight transaction preview endpoint, optimizes ENS and metadata preloading using concurrent requests, and implements a pooled HTTP client using Finch to reuse connections. It also adds caching for contract methods and fixes state changes for Eden sponsored transactions. The review feedback highlights critical issues, including unresolved merge conflicts in common-blockscout.env and mix.lock, a bug in HttpClient where Finch.Error is not properly rescued, and several potential runtime crashes due to missing safety checks for nil values or unconfigured environment variables.

[cursor]

Bugbot couldn't run - usage limit reached

Bugbot is counted against Cursor usage for this user or team, and this run hit a usage or spend limit.

A user or team admin can review and increase usage limits in the Cursor dashboard.

(requestId: serverGenReqId_c58c6bc5-00c5-48d5-b950-420a8f18a9d6)

[cursor]

Bugbot couldn't run - usage limit reached

Bugbot is counted against Cursor usage for this user or team, and this run hit a usage or spend limit.

A user or team admin can review and increase usage limits in the Cursor dashboard.

(requestId: serverGenReqId_a9588607-baa6-4066-9ba7-06a0d0e9538b)

[cursor]

Bugbot couldn't run - usage limit reached

Bugbot is counted against Cursor usage for this user or team, and this run hit a usage or spend limit.

A user or team admin can review and increase usage limits in the Cursor dashboard.

(requestId: serverGenReqId_9b37a20c-d99e-4527-a316-89a90d6aa259)

[cursor]

Bugbot couldn't run - usage limit reached

Bugbot is counted against Cursor usage for this user or team, and this run hit a usage or spend limit.

A user or team admin can review and increase usage limits in the Cursor dashboard.

(requestId: serverGenReqId_7167e7cd-1b4a-4c4d-8a5a-4fd646969274)

[cursor]

Bugbot couldn't run - usage limit reached

Bugbot is counted against Cursor usage for this user or team, and this run hit a usage or spend limit.

A user or team admin can review and increase usage limits in the Cursor dashboard.

(requestId: serverGenReqId_34248327-cebd-4ff2-b17f-e1a1bfb2641d)

[cursor]

Bugbot couldn't run - usage limit reached

Bugbot is counted against Cursor usage for this user or team, and this run hit a usage or spend limit.

A user or team admin can review and increase usage limits in the Cursor dashboard.

(requestId: serverGenReqId_f64b5c6a-97bb-45b3-a636-bce966f6b9d8)

[cursor]

Bugbot couldn't run - usage limit reached

Bugbot is counted against Cursor usage for this user or team, and this run hit a usage or spend limit.

A user or team admin can review and increase usage limits in the Cursor dashboard.

(requestId: serverGenReqId_965d4803-1105-4910-a95d-b1a6c5175c23)

[cursor]

Bugbot couldn't run - usage limit reached

Bugbot is counted against Cursor usage for this user or team, and this run hit a usage or spend limit.

A user or team admin can review and increase usage limits in the Cursor dashboard.

(requestId: serverGenReqId_97553bac-5c98-498b-a8a5-0132cf28f7e9)

[cursor]

Bugbot couldn't run - usage limit reached

Bugbot is counted against Cursor usage for this user or team, and this run hit a usage or spend limit.

A user or team admin can review and increase usage limits in the Cursor dashboard.

(requestId: serverGenReqId_acad6b6e-2ec3-4ca7-8a70-829fd14bed05)

[cursor]

Bugbot couldn't run - usage limit reached

Bugbot is counted against Cursor usage for this user or team, and this run hit a usage or spend limit.

A user or team admin can review and increase usage limits in the Cursor dashboard.

(requestId: serverGenReqId_9309d0f9-a5e0-4473-8073-f5a022acab6e)