README: describe the changelog and point at the wiki

The code side of this repo exists only to carry a description and the
wiki; the pipeline that renders the changelog is private because it
holds the scraped corpus.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01BhWZy2PNBkkbfSLC8Kk4ys

README.md

@@ -1,2 +1,31 @@
-# zerto-docs-changelog
+# Zerto documentation changelog
 
+**→ [docs.zerto.dev](https://docs.zerto.dev)**
+
+An unofficial, automated record of what changes in the published Zerto
+documentation at [help.zerto.com](https://help.zerto.com).
+
+Zerto's docs are updated continuously and silently — pages get rewritten,
+limits get raised, requirements appear — with no release note to tell you.
+Something re-fetches every published documentation bundle each day, diffs it
+against the previous copy, and writes down what moved. The result lives in
+this repo's **[Wiki](https://git.jpaul.io/justin/zerto-docs-changelog/wiki)**:
+a page per month, a section per day, each change named by its real page title
+and linked straight to the documentation it describes.
+
+This repo holds no code. The pipeline that produces the changelog is private —
+it carries a full scrape of the documentation — and only the rendered result
+is published here.
+
+## Caveats
+
+- This is **not** an official Zerto or HPE publication, and is not affiliated
+  with or endorsed by either. The documentation is Zerto's; only these change
+  summaries are generated here.
+- Summaries are machine-written and unreviewed. Every line is checked back
+  against the diff before it is published, so it describes text that really
+  changed — but **[help.zerto.com](https://help.zerto.com) is the
+  authoritative source.**
+- Only English (`enus`) documentation is tracked.
+- A page can be edited without its meaning changing (a screenshot swap, a
+  moved link). Those still show up.