chore: repoint URLs at git.swaits.com and bump for release

Rewrites remaining github.com / git.sr.ht references to git.swaits.com,
translating GitHub URL shapes to Gitea's (/blob/<ref>/ -> /src/branch/<ref>/,
/tree/<tag> -> /src/tag/<tag>, /actions/workflows/X -> /actions?workflow=X,
/edit/ -> /_edit/).

Left pointing at GitHub on purpose: pull-request links (PRs were not migrated)
and GitHub-only surfaces Gitea lacks (security advisories, discussions).

Cargo.toml

@@ -1,13 +1,13 @@
 [package]
 name = "jjf"
-version = "0.4.0"
+version = "0.4.1"
 edition = "2024"
 rust-version = "1.85"
 authors = ["Stephen Waits <steve@waits.net>"]
 description = "Fuzzy revision picker for jujutsu (jj). Wraps any jj subcommand with an interactive picker over jj log, with a live jj show preview pane."
 license = "MIT"
 repository = "https://git.swaits.com/swaits/jjf"
-homepage = "https://github.com/swaits/jjf"
+homepage = "https://git.swaits.com/swaits/jjf"
 documentation = "https://docs.rs/jjf"
 readme = "README.md"
 keywords = ["jj", "jujutsu", "vcs", "picker", "fuzzy-finder"]