blog: drawn images for the topic tiles (#661)

Merge pull request #555 from chaitanyagiri/docs/retire-download-page

Merge pull request #469 from chaitanyagiri/wall/additions

v0.4.6 — speaks your language, and updates itself

v0.4.7-rc.2

Re-cut of the updater rehearsal after the release-notes fix.

rc.1 proved the hop: a 0.4.6-rc.1 client detected and downloaded it on its
own. But its toast showed one item, a CSS rule, because electron-updater
fell back to GitHub's rendered-HTML atom feed and the only bullet-shaped
line in it came from RELEASE.md's <style> block.

This build bakes the what's-new list into latest*.yml via
releaseInfo.releaseNotesFile, so the feed is never consulted, and hardens
the parser against rendered HTML as a fallback.

Publishes as a GitHub pre-release. v0.4.7-rc.1 is left exactly as it is: it
produced real artifacts that were really consumed.

v0.4.7-rc.1

Updater rehearsal prerelease. Drives the RELEASE-CHECKLIST.md proving hop
0.4.6-rc.1 -> 0.4.7-rc.1, which is the only hop that STARTS on the new
updater code and therefore the only one that proves it.

Carries: the six 0.4.7-rc items (IME Enter guard, self-hosted fonts with
CJK/Arabic fallbacks, i18n en + zh-CN, the terminal half of RTL, one footer
Save in Settings, the Connections tab), plus PR #339's shared model catalog.

Includes the lockfile fix for the nested ws entry PR #205 dropped, without
which npm ci refuses the tree on CI's npm 10.

Publishes as a GitHub pre-release, so only a machine already on a prerelease
is offered it. Stable 0.4.5 clients see nothing.

0.4.6-rc.1 — updater rehearsal build (pre-release, not for general use)

v0.4.5 — the things you trusted that were quietly wrong

Cost reporting was understating spend after every restart, semantic memory
returned NaN on Apple Silicon, and agents could not reliably reach each other.
All three are fixed, alongside weekday scheduling, clickable paths everywhere,
one editor instead of two, the Chromium renderer sandbox, and 23 community
pull requests.

v0.4.4 — Windows agents can finally talk to each other

v0.4.4-rc.1 — Windows verification build

Pre-release. Publishes a public download page WITHOUT offering itself to
installed copies (the updater reads releases/latest, which excludes
pre-releases).

Headline: agent-to-agent messaging works on Windows. Written and unit-tested on
macOS; never executed on Windows. That is what this build is for.