Each service its own version: ipx, ipx-directory, the page (#207)

The workspace stops holding one version. ipx keeps 0.12.1-dev and its vX.Y.Z tags; the directory
starts at 0.1.0-dev, tagged directory-vX.Y.Z, and the page at 0.1.0-dev in package.json, tagged
web-vX.Y.Z, which web/build.mjs gives the script for the logo's tooltip beside ipx's. crates/feed
is a library, not released. CLAUDE.md's release steps are for one service at a time.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/CHANGELOG.md

@@ -4,6 +4,8 @@ The page, and the container that serves it (Caddy). ipx's changelog is
 [crates/ipx/CHANGELOG.md](../crates/ipx/CHANGELOG.md), which was the page's too until 0.12.0, and the
 directory's [crates/directory/CHANGELOG.md](../crates/directory/CHANGELOG.md).
 
+Its version is in `package.json`, and a release is tagged `web-vX.Y.Z`.
+
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
@@ -11,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- The page has a version of its own, which the logo's tooltip shows beside ipx's (#207).
 - The page is served by its own container, ipx-web (Caddy), which passes the API to ipx on the same address, so a change to the page deploys without rebuilding ipx (#203).
 - Admin, Directory sets the directory's address and this server's token, and whether to share, and says how the last share went (#205).
 - A feed's settings have a Private switch, which keeps it out of the directory; on and locked for a feed whose address or login shows it is private (#205).