Resolve upstream conflicts and harden FunASR S3 handling

[LauraGPT]

This collaboration PR prepares murtaza-nasir#353 for another upstream review.

Changes:

• merge current upstream master while preserving both FunASR and Mossland connectors
• keep pre-signed S3 URLs task-local (no database/API persistence and no signed query strings in logs)
• sign existing S3 recordings directly instead of duplicating them
• restore the generic S3 upload implementation to avoid AWS/MinIO regressions
• stop polling immediately on terminal provider failures and preserve ProviderError metadata
• keep FunASR preparation scoped to the single-file connector path
• document that the S3 endpoint must be reachable by DashScope

Validation:

• full suite: 1504 passed, 11 subtests passed
• focused FunASR + S3 suite: 53 passed
• connector/processing/queue/storage suite: 264 passed
• compileall and git diff --check passed

The one full-suite warning is an existing SQLAlchemy test-cleanup warning in tests/test_api_v1_users_me.py.

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[ikelvingo]

Closing — merged the useful changes directly into pr/funasr-connector with Aliyun OSS compat and intranet S3 endpoint preserved.