chore(release): 0.1.0

- Add LICENSE (MIT, copyright 2026 Stephen Waits)
- Add README.md reflecting the current TUI: two-column preview pane
  with jj show --summary, live command preview row, default-to-show
  behavior, full keybinding table, shell integration matrix, internals
  overview, attribution to oppi.li's original bash+fzf concept
- Add CHANGELOG.md (keep-a-changelog format) with 0.1.0 release notes
- Add .github/workflows/ci.yml — fmt + clippy + check on every push/PR;
  build matrix on stable + 1.85 (MSRV)
- Update Cargo.toml: refined description, repository/homepage/docs
  URLs, keywords + categories, rust-version=1.85, exclude .github and
  ux.txt from the published tarball
- Update .gitignore to also exclude ux.txt (scratch UX mockup)

Verified clean:
  cargo fmt --all -- --check
  cargo clippy --all-targets -- -D warnings
  cargo publish --dry-run --allow-dirty  (16 files, 20.6 KiB compressed)

Cargo.toml

@@ -2,6 +2,20 @@
 name = "jjf"
 version = "0.1.0"
 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://github.com/swaits/jjf"
+homepage = "https://github.com/swaits/jjf"
+documentation = "https://docs.rs/jjf"
+readme = "README.md"
+keywords = ["jj", "jujutsu", "vcs", "picker", "fuzzy-finder"]
+categories = ["command-line-utilities", "development-tools"]
+exclude = [
+    "/.github/",
+    "/ux.txt",
+]
 
 [dependencies]
 crossterm = "0.29"