Feature Request: Document Bedrock/Vertex feature availability in changelog

[sfc-gh-mochen]

Summary

As a Bedrock user, I'd love it if the changelog could indicate when new features are not available on third-party providers (Bedrock, Vertex, Foundry). This would help set expectations and reduce confusion when features don't seem to work.

Context

After investigating the codebase, I discovered several features are gated behind Statsig feature flags that return false for third-party providers via the SX() check:

function SX() {
    return N0(process.env.CLAUDE_CODE_USE_BEDROCK) || 
           N0(process.env.CLAUDE_CODE_USE_VERTEX) || 
           N0(process.env.CLAUDE_CODE_USE_FOUNDRY) || 
           !!process.env.DISABLE_TELEMETRY || 
           !!process.env.CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC
}

Features currently unavailable on Bedrock/Vertex:

Feature	Gate	Description
Session Memory	tengu_session_memory	Running session notes in summary.md
Session Memory Compact	tengu_sm_compact	Instant compaction using pre-written summaries
Tool Result Persistence	tengu_tool_result_persistence	Saving large tool results to files
Microcompact File Persistence	tengu_compact_mc_files	Saving cleared tool results to files for later retrieval

Example changelog entries that would benefit:

• v2.0.64: "Made auto-compacting instant" → Could note this uses Session Memory which requires first-party API
• Features using tengu_* gates that are disabled for third-party providers

Suggestion

When a changelog entry describes a feature that relies on Statsig gates disabled for Bedrock/Vertex, consider adding a note like:

• Made auto-compacting instant (first-party API only)

Or a dedicated section:

Note for Bedrock/Vertex users: The following features in this release require first-party API access: ...

Why This Helps

1. Sets expectations - Users won't spend time debugging why a feature doesn't work
2. Transparency - Clear communication about platform differences
3. Reduces support burden - Fewer confused users asking why features don't work

Thanks for the amazing tool! 🙏

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