Update CLA→CRE migration guides to match template README

[ejacquier]

Update CLA→CRE migration guides to match template README

Summary

• Rewrites cla-migration-ts.mdx to match the reviewed source of truth (smartcontractkit/cre-templates README) instead of the previously outdated docs:
• • adds the two-layer Security Model, mandatory workflow identity checks (previously and incorrectly documented as optional), consumer gas limit guard, emergency pause, block-number monotonicity/staleness protection, Foundry-based deploy commands, and expanded Compatibility/Out of Scope/Troubleshooting sections.
• Trims cla-migration-go.mdx to keep only genuinely Go-specific content (concepts, chain support, terminology, trigger code samples) and redirects to the TS guide for the actual Bridge-pattern migration, since no automation-migration-go template currently exists.

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Project	Deployment	Actions	Updated (UTC)
documentation	Ready	Preview	Jul 15, 2026 6:03pm

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