[Security] Bot API bindings generated from unpinned upstream spec — supply chain compromise risk

[vangelif]

Severity: High
Metric: Supply Chain Risk — Current: 7/10 → After Fix: 2/10 | 71% risk reduction
File: codegen scripts (ts-morph@27.0.2 consuming @grom.js/bot-api-spec)

Issue

Bot API bindings are generated via ts-morph from @grom.js/bot-api-spec. If this package uses a range specifier (^ or ~) rather than an exact version pin, a compromised or accidentally broken publish of the spec automatically propagates into generated bindings the next time codegen runs — affecting all downstream library consumers.

Suggested fix

1. Pin @grom.js/bot-api-spec to an exact version (no ^ or ~).
2. Commit a SHA-256 hash of the expected generated output:

sha256sum src/generated/bot-api.ts > codegen/output.sha256

3. Fail CI if the hash changes unexpectedly:

sha256sum --check codegen/output.sha256

4. Add CODEOWNERS rule requiring maintainer review on any change to generated files.

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