docs: changelog + M27 scoring & replay updates

[indykish]

Summary

• Add changelog.mdx with Mintlify <Update> components — product updates for April 5, March 30, March 28, March 25
• Update runs/scorecard.mdx — resource efficiency axis is live (was stubbed), plain-language description, updated API example
• Update runs/troubleshooting.mdx — replay is shipped (was "coming soon"), add CLI and API examples
• Add Changelog to navbar (before "Talk to us") and sidebar navigation
• Link billing "coming soon" note to changelog

Test plan

• Mintlify preview renders changelog with <Update> components
• Navbar shows Changelog link before "Talk to us"
• Scorecard page no longer mentions "stubbed" or "Firecracker"
• Troubleshooting replay section shows actual usage, not "planned"

🤖 Generated with Claude Code

[greptile-apps]

Greptile Summary

This PR ships M27 release documentation: a new changelog page, updated scorecard docs for the live resource efficiency axis, and updated troubleshooting docs scoping run replay to API-only (with CLI noted as planned). Navigation is updated to surface the changelog in both the navbar and sidebar.

• changelog.mdx — Four dated entries using Mintlify <Update> components. The March 30 entries correctly scope streaming and replay to the API, explicitly noting that CLI support (--watch and zombiectl runs replay) is coming in a future release — making these entries consistent with the existing "planned for a future release" notes in cli/zombiectl.mdx (lines 171, 197) and runs/submitting.mdx (lines 21–25). No contradiction remains.
• runs/scorecard.mdx — Resource efficiency axis is fully documented (memory 70%, CPU 30% sub-weights; defaults to 50 when data is unavailable). API response example updated to formula version "2" with resource_efficiency included in the axes breakdown.
• runs/troubleshooting.mdx — Run replay section now shows the live API curl example with a <Note> that the CLI command (zombiectl runs replay) is planned, rather than presenting the entire section as coming soon.
• docs.json — Changelog added to the navbar before "Talk to us" and to a new "Updates" sidebar group containing changelog.
• billing/plans.mdx — The "coming soon" note for non-billable Bronze runs now links to /changelog so users can track the rollout.

Confidence Score: 5/5

Safe to merge — all doc changes are internally consistent and no contradictions remain.

Documentation-only PR with no logic bugs. The changelog explicitly scopes streaming and replay to API-only with CLI flagged as planned, which is now consistent with the existing 'planned for a future release' notes in cli/zombiectl.mdx and runs/submitting.mdx. No P0 or P1 findings.

No files require special attention.

Important Files Changed

Filename	Overview
changelog.mdx	New changelog page; March 30 entries correctly scoped to API-only with CLI explicitly flagged as planned for a future release
runs/scorecard.mdx	Resource efficiency axis fully documented with memory/CPU sub-weights and formula v2 API response example
runs/troubleshooting.mdx	Replay section scoped to API-only curl example with Note that CLI command is planned — consistent with changelog
docs.json	Changelog added to navbar before 'Talk to us' and to sidebar 'Updates' group
billing/plans.mdx	Adds /changelog link to the 'coming soon' note for non-billable Bronze runs

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    DJ[docs.json] -->|navbar + sidebar| CL[changelog.mdx]
    CL -->|April 5| SC[runs/scorecard.mdx\nResource efficiency live]
    CL -->|March 30 API-only| TR[runs/troubleshooting.mdx\nReplay curl example + CLI planned note]
    CL -->|future feature tracking| BP[billing/plans.mdx\nLinks to /changelog]
    SC -->|formula_version 2| API[API response example]
    TR -->|GET /v1/runs/id:replay| API

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_{Reviews (4): Last reviewed commit: "docs: mark zombiectl runs replay as plan..." | Re-trigger Greptile}