Update MCP Gateway to v0.0.78 and fix test version references

[Copilot]

Updates the MCP Gateway (gh-aw-mcpg) Docker image reference from v0.0.76 to v0.0.78 (latest release). All 140 compiled workflow lock files now pull the updated container version.

Changes

Constants

• pkg/constants/constants.go: Bumped DefaultMCPGatewayVersion to v0.0.78
• pkg/constants/constants_test.go: Updated test expectations

Test improvements

• pkg/workflow/docker_predownload_test.go: Replaced hardcoded version strings (v0.0.69) with constants.DefaultMCPGatewayVersion for maintainability

Workflow compilation

• All .lock.yml files regenerated with new MCP Gateway version reference

// Before
const DefaultMCPGatewayVersion Version = "v0.0.76"

// After
const DefaultMCPGatewayVersion Version = "v0.0.78"

Release highlights (v0.0.78)

• Protocol compliance: 503 responses during shutdown per MCP Spec 5.1.3
• Performance: JSON schema response caching
• Debugging: Enhanced DIFC evaluator and config validation logging

Original prompt

Update referenced version of githubnext/gh-aw-mcpg to latest released version and recompile

Custom agent used: agentic-workflows
GitHub Agentic Workflows (gh-aw) - Create, debug, and upgrade AI-powered workflows with intelligent prompt routing

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Changeset

• Type: patch
• Description: Bump the MCP gateway version to v0.0.78 and regenerate all compiled workflows to use the new container release.

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PRs (last merged):

• Add diagnostic logging to MCP gateway health check failures
• Fix template injection validator false positives when env: follows run:
  Tests: GitHub MCP ✅; safeinputs-gh ✅; Serena activate ✅; Playwright ✅
  Tests: Tavily ✅; file write ✅; bash cat ✅; discussion query+comment ✅
  Overall status: PASS

AI generated by Smoke Codex

[github-actions]

Smoke Test Results

Last 2 Merged PRs:

• Add diagnostic logging to MCP gateway health check failures #11628: Add diagnostic logging to MCP gateway health check failures
• Fix template injection validator false positives when env: follows run: #11586: Fix template injection validator false positives when env: follows run:

Test	Status
GitHub MCP	✅
Safe Inputs GH CLI	✅
Serena MCP	✅
Make Build	✅
Playwright	✅
Tavily Search	✅
File Writing	✅
Bash Tool	✅
Discussion Interaction	✅

Overall Status: PASS

AI generated by Smoke Claude