docs: record the v0.11.0 publish and the site redeploy

[REPPL]

Records the v0.11.0 publish in the decision log, as the release ceremony requires after the cut.

• The run approved the release environment under ruling A2 and the releases ruling of 2026-09-25T08:04:52Z once the merge queue, the verify job and main's CI on the tagged commit were green.
• The one red run on that commit was the site preview, a non-gating deploy whose probe had refused on every push since the root help was grouped (iss-2609260709386741, fixed in fix: the site workflow finds the site verb under grouped help #720). v0.11.0's production site render failed the same way after publishing, and the site was then redeployed from main naming the tag, which rendered abcdev.app from the released binary and attached site.tar.gz.

Refs: iss-2609260709386741
Assisted-by: Claude:claude-opus-5-5