demisto/demisto-sdk v1.39.6 on GitHub

Docker image push now verifies the image is pullable after pushing. #5458
Added a new graph validation (GR116) that verifies an AgentixAgent's total context (its own name, description, system instructions and conversation starters, plus the name and description of every action, skill, and collection it depends on) does not exceed the maximum allowed character budget. #5460
Added a new validation (AG118) that enforces an evaluator test file ('_test.yml') exists next to each AgentixAction. #5460
Added a new -ccp/--connectors-content-path option to demisto-sdk validate so an external Unified Connector Content (UCC) repository can be validated together with a plain content checkout. Works with both -a (all UCC connectors are temporarily synced into the content repo) and -g (only the connectors changed in the UCC repo's git diff are validated), mirroring the existing --private-content-path behavior for Packs/**. Copied files are automatically cleaned up on exit, and the flag can be combined with --private-content-path. #5468

Docker image push now fails loudly when the push did not succeed. #5458
Dev/test docker images are now pulled from the registry they were pushed to, fixing intermittent "manifest unknown" failures on first-time pushes. #5458
Updated the AG105 validation to align the AgentixAction argument/output valid types (removed 'keyValue' and 'textArea') and to compare types case-sensitively. #5460
Fixed demisto-sdk validate -a silently skipping connectors, so connector-only validations (such as CO100) now run under -a as they already did under -g. #5468
Fixed demisto-sdk validate -i not supporting a relative connectors path (e.g. connectors/foo/connector.yaml) together with --connectors-content-path, nor a pack-level path (e.g. Packs/CommonScripts) together with --private-content-path. #5468

Added connector validation infrastructure (ConnectorsValidator base, .connector-ignore, grouped/standard filtering) and new CO validators covering connector metadata, handlers, and capabilities. #5642
Added the SDK Nightly Gate GitHub Actions workflow, which flags PRs that modify SDK code and requires either a nightly-run-passed or nightly-run-skipped label (or a Content build against the SDK branch) before merge. #5464