feat(cli): port ghostty +action CLI commands

Ports ZIG/src/cli into ghostty-cli: action detection/dispatch with
per-action --help, and the actions help, version, list-actions,
list-colors, list-keybinds, list-themes (plain listing plus an
interactive ratatui browser mirroring Ghostty's libvaxis UI),
show-config, validate-config, edit-config, crash-report (listing),
ssh-cache and boo (235 embedded frames).

Verified byte-for-byte against the installed Ghostty 1.3.1 for stdout,
stderr and exit codes of most actions, incl. tty output in a pty at
widths 20-200. Known differences: +list-colors --plain prints all 782
colors (Ghostty truncates at 617 because it never flushes), +version
has placeholder build info until build_info::set is wired up.

Deferred: list-fonts, show-face (need font discovery integration) and
new-window (needs GTK IPC); they return NotYetAvailable for now.

Test Plan:
- cargo test -p ghostty-cli (86 tests)
- cargo run -p ghostty-cli --example cli -- +list-keybinds --plain
  and diff against `ghostty +list-keybinds --plain`

Cargo.lock

@@ -229,7 +229,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "regex",
- "rustc-hash",
+ "rustc-hash 2.1.3",
  "shlex 1.3.0",
  "syn 2.0.119",
 ]
@@ -240,7 +240,16 @@ version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0700ddab506f33b20a03b13996eccd309a48e5ff77d0d95926aa0210fb4e95f1"
 dependencies = [
- "bit-vec",
+ "bit-vec 0.6.3",
+]
+
+[[package]]
+name = "bit-set"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2f926cc3060f09db9ebc5b52823d85268d24bb917e472c0c4bea35780a7d"
+dependencies = [
+ "bit-vec 0.9.1",
 ]
 
 [[package]]
@@ -249,6 +258,12 @@ version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "349f9b6a179ed607305526ca489b34ad0a41aed5f7980fa90eb03160b69598fb"
 
+[[package]]
+name = "bit-vec"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b71798fca2c1fe1086445a7258a4bc81e6e49dcd24c8d0dd9a1e57395b603f51"
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -358,6 +373,15 @@ dependencies = [
  "libloading",
 ]
 
+[[package]]
+name = "codespan-reporting"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af491d569909a7e4dee0ad7db7f5341fef5c614d5b8ec8cf765732aba3cff681"
+dependencies = [
+ "unicode-width",
+]
+
 [[package]]
 name = "compact_str"
 version = "0.9.1"
@@ -674,7 +698,7 @@ version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b95f7c0680e4142284cf8b22c14a476e87d61b004a3a0861872b32ef7ead40a2"
 dependencies = [
- "bit-set",
+ "bit-set 0.5.3",
  "regex",
 ]
 
@@ -865,7 +889,6 @@ dependencies = [
 name = "ghostty-cli"
 version = "0.1.0"
 dependencies = [
- "crossterm",
  "flate2",
  "ghostty-config",
  "ghostty-input",
@@ -954,9 +977,13 @@ dependencies = [
 name = "ghostty-renderer"
 version = "0.1.0"
 dependencies = [
- "ghostty-config",
+ "bytemuck",
  "ghostty-font",
- "ghostty-terminal",
+ "glow",
+ "khronos-egl",
+ "log",
+ "naga",
+ "thiserror 2.0.21",
 ]
 
 [[package]]
@@ -972,7 +999,10 @@ dependencies = [
 name = "ghostty-terminal"
 version = "0.1.0"
 dependencies = [
+ "ghostty-datastruct",
+ "ghostty-unicode",
  "ghostty-vt",
+ "log",
 ]
 
 [[package]]
@@ -1008,6 +1038,18 @@ version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e4eba85ea1d0a966a983acd07deee566e67395d2d96b6fb39e62b5a833f1eb0b"
 
+[[package]]
+name = "glow"
+version = "0.18.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "263218b0ba2b0715c3370fb04674f5f8aa331594b521c94ff0a8e4a8472d1386"
+dependencies = [
+ "js-sys",
+ "slotmap",
+ "wasm-bindgen",
+ "web-sys",
+]
+
 [[package]]
 name = "half"
 version = "2.7.1"
@@ -1016,6 +1058,7 @@ checksum = "6ea2d84b969582b4b1864a92dc5d27cd2b77b622a8d79306834f1be5ba20d84b"
 dependencies = [
  "cfg-if",
  "crunchy",
+ "num-traits",
  "zerocopy",
 ]
 
@@ -1157,6 +1200,16 @@ dependencies = [
  "thiserror 2.0.21",
 ]
 
+[[package]]
+name = "khronos-egl"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6aae1df220ece3c0ada96b8153459b67eebe9ae9212258bb0134ae60416fdf76"
+dependencies = [
+ "libc",
+ "libloading",
+]
+
 [[package]]
 name = "konst"
 version = "0.2.20"
@@ -1354,6 +1407,44 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "naga"
+version = "30.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a616d2fb8c89516ac2723a581f69d6c18576046bed761bd6b305e5618e6ae130"
+dependencies = [
+ "arrayvec",
+ "bit-set 0.10.0",
+ "bitflags 2.13.2",
+ "cfg-if",
+ "cfg_aliases",
+ "codespan-reporting",
+ "half",
+ "hashbrown 0.17.1",
+ "indexmap",
+ "libm",
+ "log",
+ "naga-types",
+ "num-traits",
+ "once_cell",
+ "pp-rs",
+ "rustc-hash 1.1.0",
+ "thiserror 2.0.21",
+ "unicode-ident",
+]
+
+[[package]]
+name = "naga-types"
+version = "30.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "590afbf58a6f4f62873cd5cff4468061844bafa1cdf399cc954537c22d768d49"
+dependencies = [
+ "hashbrown 0.17.1",
+ "indexmap",
+ "rustc-hash 1.1.0",
+ "thiserror 2.0.21",
+]
+
 [[package]]
 name = "nix"
 version = "0.29.0"
@@ -1413,6 +1504,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
 dependencies = [
  "autocfg",
+ "libm",
 ]
 
 [[package]]
@@ -1749,6 +1841,15 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4a6394b9e965e73d0a289ee54f589087e2c676aedf60885baf52c76b771e4958"
 
+[[package]]
+name = "pp-rs"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb458bb7f6e250e6eb79d5026badc10a3ebb8f9a15d1fff0f13d17c71f4d6dee"
+dependencies = [
+ "unicode-xid",
+]
+
 [[package]]
 name = "prettyplease"
 version = "0.2.37"
@@ -1961,6 +2062,12 @@ version = "0.8.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6f6ff9a378485b298a5286656da665ba74413d36db0979633275d2e708145d4"
 
+[[package]]
+name = "rustc-hash"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
+
 [[package]]
 name = "rustc-hash"
 version = "2.1.3"
@@ -2126,6 +2233,15 @@ version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c790de23124f9ab44544d7ac05d60440adc586479ce501c1d6d7da3cd8c9cf5"
 
+[[package]]
+name = "slotmap"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bdd58c3c93c3d278ca835519292445cb4b0d4dc59ccfdf7ceadaab3f8aeb4038"
+dependencies = [
+ "version_check",
+]
+
 [[package]]
 name = "smallvec"
 version = "1.16.3"
@@ -2627,6 +2743,16 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "web-sys"
+version = "0.3.106"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88261b9deccee56594c11a3460c462c41f58d148598fe70ad77070126a68aba4"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "wezterm-bidi"
 version = "0.2.3"