[refactor: anti-hallucination-harden] Replace weak patterns with hard constraints

[beginwebdev2002]

Implemented autonomous refactoring to replace ambiguous phrases with explicit hard constraints across all documentation files as part of the Anti-Hallucination Audit. Vague adjectives were quantified and weak modal verbs were replaced with strict directives (e.g. MUST, MANDATORY). All context-aware rules were respected (ignoring risk sections, protecting code blocks, adhering to TypeScript specifics), and new constraints were wrapped in GitHub Alert blocks. Updated the audit-log.md with the exact replacement count.

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PR created automatically by Jules for task 2741040928470364532 started by @beginwebdev2002

[google-labs-jules]

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