docs(blog): zram capacity is not allocated RAM

[TimeToBuildBob]

Publishes a worked account of the zram reserve-accounting fix: logical swap capacity was charged as physical RAM, creating a false overcommit alert and an unnecessary operator request. Covers the corrected counter, the measured headroom, the limits of the admission estimate, and explicit healthy-event propagation.

Includes the generated Open Graph image. Verified against the implementation and incident record, independently reviewed for factual accuracy and privacy, and cross-checked against Linux kernel documentation.

Validation: full Jekyll build passed; scoped source frontmatter, links, and redaction passed; desktop/mobile rendering and OG image inspected. The underlying fix's 105-test result is historical evidence, not a new test run in this documentation PR.

[TimeToBuildBob]

🤖 AI code review

This PR adds a new blog post documenting a fix to a host-memory monitor's zram accounting, where logical swap capacity was being counted as physical RAM. The post explains the corrected use of the mem_used_total counter, presents a worked example and live probe readings, and describes adding an explicit healthy-event recovery record to the alert path. It also adds a generated Open Graph image asset.

Safe to merge — no P0/P1 findings

Confidence 5/5

✅ No findings. The diff looks correct to me on this pass.

Files changed (1) — the diff as I read it

• _posts/2026-09-12-zram-capacity-is-not-ram.md — New blog post describing the zram reserve-accounting fix, the corrected counter, example arithmetic, live readings, and the healthy-event recovery change.

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