refactor: resolve cross-crate integration TODOs and resources discovery

Cleanup pass over items collected in docs/rewrite/INTEGRATION_TODO.md:
- OSC 133 printf-q / percent decoders live once in
  ghostty_vt::string_encoding; ghostty-os re-exports them.
- CursorStyle and clipboard codepoint map entries have one definition
  (ghostty-terminal); ghostty-config now depends on ghostty-terminal.
- ActionKey::docs() trailing blank lines fixed at the source; cli's
  workaround removed (+list-actions --docs still byte-identical).
- x11_color exposes names in original case; cli no longer re-parses
  rgb.txt.
- One cgroup scope wait loop (ghostty_os::cgroup::wait_for_scope).
- Flatpak passwd lookup implemented in ghostty-os via a local pty.
- +version shows the rustc version captured at build time.

Resources: dev builds find <workspace>/resources automatically (keeping
Ghostty's sentinel-file detection and GHOSTTY_RESOURCES_DIR);
scripts/gen-terminfo.sh (just terminfo) regenerates the compiled
terminfo; `just install [PREFIX]` installs binary, share/ghostty,
terminfo, desktop/D-Bus/systemd/metainfo files and icons.

Test Plan:
- cargo test for vt, os, config, input, cli
- diff `+list-keybinds`, `+list-actions --docs`, `+show-config --default`
  against /usr/bin/ghostty

crates/ghostty-cli/Cargo.toml

@@ -11,6 +11,7 @@ ghostty-config.workspace = true
 ghostty-font.workspace = true
 ghostty-input.workspace = true
 ghostty-os.workspace = true
+ghostty-vt.workspace = true
 log = "0.4.34"
 ratatui = "0.30.2"
 thiserror = "2.0.21"

crates/ghostty-cli/build.rs

@@ -0,0 +1,18 @@
+//! Captures the compiler version for `+version` (Zig: `builtin.zig_version_string`).
+
+use std::process::Command;
+
+fn main() {
+    println!("cargo:rerun-if-changed=build.rs");
+    println!("cargo:rerun-if-env-changed=RUSTC");
+    let rustc = std::env::var("RUSTC").unwrap_or_else(|_| "rustc".into());
+    let version = Command::new(rustc)
+        .arg("--version")
+        .output()
+        .ok()
+        .and_then(|o| String::from_utf8(o.stdout).ok())
+        // "rustc 1.99.0 (b940084d7 2026-09-28)" -> "1.99.0"
+        .and_then(|s| s.split_whitespace().nth(1).map(str::to_owned))
+        .unwrap_or_else(|| "unknown".into());
+    println!("cargo:rustc-env=GHOSTTY_RUSTC_VERSION={version}");
+}

crates/ghostty-cli/src/list_actions.rs

@@ -3,7 +3,6 @@
 use std::io::Write;
 
 use ghostty_config::config_struct;
-use ghostty_input::binding::ActionKey;
 
 use crate::error::Error;
 
@@ -35,44 +34,12 @@ pub fn run(args: &[String]) -> Result<u8, Error> {
 }
 
 /// `helpgen_actions.generate(.plaintext, show_docs)`.
-///
-/// TODO(integration): this is a local copy of
-/// `ghostty_input::helpgen_actions::generate`. The embedded docs of a few
-/// actions in ghostty-input (`adjust_selection`, ...) end with an extra blank
-/// line compared to Ghostty's `help_strings`, which adds a stray `"  "` line
-/// to `--docs` output. Trailing newlines are normalised here; once the data
-/// is fixed in ghostty-input this should call `helpgen_actions::generate`.
 #[must_use]
 pub fn generate_plaintext(show_docs: bool) -> String {
-    let mut writer = String::new();
-    let mut stream = String::new();
-    for &key in ActionKey::ALL {
-        let name = key.name();
-        if name.starts_with('_') {
-            continue;
-        }
-
-        // Write previously stored doc comment below all related actions
-        if show_docs {
-            writer.push_str(&stream);
-            writer.push('\n');
-            stream.clear();
-            writer.push_str(name);
-            writer.push_str(":\n");
-            for line in key.docs().trim_end_matches('\n').split('\n') {
-                stream.push_str("  ");
-                stream.push_str(line);
-                stream.push('\n');
-            }
-        } else {
-            writer.push_str(name);
-            writer.push('\n');
-        }
-    }
-
-    // Write any remaining buffered documentation
-    writer.push_str(&stream);
-    writer
+    ghostty_input::helpgen_actions::generate_string(
+        ghostty_input::helpgen_actions::Format::Plaintext,
+        show_docs,
+    )
 }
 
 #[cfg(test)]
@@ -94,15 +61,4 @@ mod tests {
         assert!(s.contains("      respectively.\n\njump_to_prompt:\n"));
         assert!(s.ends_with('\n'));
     }
-
-    #[test]
-    fn matches_input_crate_when_docs_are_clean() {
-        // The first actions have well-formed docs.
-        let ours = generate_plaintext(true);
-        let theirs = ghostty_input::helpgen_actions::generate_string(
-            ghostty_input::helpgen_actions::Format::Plaintext,
-            true,
-        );
-        assert!(ours.lines().take(100).eq(theirs.lines().take(100)));
-    }
 }

crates/ghostty-cli/src/list_colors.rs

@@ -16,35 +16,14 @@ config_struct! {
 }
 cli_options!(Options, help);
 
-/// `terminal/res/rgb.txt`, the same file `x11_color` is built from.
-///
-/// TODO(integration): ghostty-vt's `x11_color` only exposes lookups (and
-/// lower-cases the names); expose its key list and use it instead of
-/// re-parsing the data here.
-const RGB_DATA: &str = include_str!("../../ghostty-vt/src/res/rgb.txt");
-
 /// All X11 color names (with their original spelling) and values. Like the
 /// case-insensitive Zig map the first spelling of a name wins.
 #[must_use]
 pub fn x11_colors() -> Vec<(String, (u8, u8, u8))> {
-    let mut seen = std::collections::HashSet::new();
-    let mut out = vec![];
-    for line in RGB_DATA.split('\n') {
-        if line.len() < 12 {
-            continue;
-        }
-        let parse = |s: &str| s.trim_matches(' ').parse::<u8>().ok();
-        let (Some(r), Some(g), Some(b)) =
-            (parse(&line[0..3]), parse(&line[4..7]), parse(&line[8..11]))
-        else {
-            continue;
-        };
-        let name = line[12..].trim_matches([' ', '\t', '\n']);
-        if seen.insert(name.to_ascii_lowercase()) {
-            out.push((name.to_string(), (r, g, b)));
-        }
-    }
-    out
+    ghostty_vt::x11_color::names()
+        .iter()
+        .map(|(n, c)| ((*n).to_string(), (c.r, c.g, c.b)))
+        .collect()
 }
 
 /// `std.ascii.orderIgnoreCase`.

crates/ghostty-cli/src/version.rs

@@ -41,11 +41,7 @@ pub fn write_version(out: &mut dyn Write, info: &BuildInfo, tty: bool) -> std::i
 
     writeln!(out, "Build Config")?;
     // The Zig build prints its compiler version here.
-    writeln!(
-        out,
-        "  - Rust version  : {}",
-        option_env!("CARGO_PKG_RUST_VERSION").unwrap_or("unknown")
-    )?;
+    writeln!(out, "  - Rust version  : {}", env!("GHOSTTY_RUSTC_VERSION"))?;
     writeln!(out, "  - build mode    : {}", info.build_mode)?;
     writeln!(out, "  - app runtime   : {}", info.app_runtime)?;
     writeln!(out, "  - font engine   : {}", info.font_backend)?;