feat: migrate mingling-specific picker code into mingling crate

BREAKING CHANGE: Remove `mingling_support` feature from arg-picker
crate. The
`EntryPicker` trait and `corebind` module are now part of the mingling
crate
directly, and `build_pattern1` is now a public method.

2 files changed, 143 insertions, 0 deletions

diff --git a/mingling/src/constants/exit_codes.rs b/mingling/src/constants/exit_codes.rs
new file mode 100644
index 0000000..2359f42
--- /dev/null
+++ b/mingling/src/constants/exit_codes.rs
@@ -0,0 +1,14 @@
+/// Exit code indicating successful command execution.
+pub const EXIT_SUCCESS: i32 = 0;
+
+/// Exit code for general errors.
+pub const EXIT_GENERAL_ERR: i32 = 1;
+
+/// Exit code for incorrect command usage (or invalid arguments).
+pub const EXIT_USAGE_ERR: i32 = 2;
+
+/// Exit code indicating permission denied (or the command is not executable).
+pub const EXIT_PERM_DENIED: i32 = 126;
+
+/// Exit code for command not found (or PATH error).
+pub const EXIT_CMD_NOT_FOUND: i32 = 127;
diff --git a/mingling/src/constants/picker.rs b/mingling/src/constants/picker.rs
new file mode 100644
index 0000000..f2a448b
--- /dev/null
+++ b/mingling/src/constants/picker.rs
@@ -0,0 +1,129 @@
+use std::marker::PhantomData;
+
+use arg_picker::{PickerArg, PickerArgs, value::Flag};
+
+/// Remaining positional arguments (anything not consumed as an option).
+/// - `full`: `[]` (empty — not triggered by any `--` prefix).
+/// - `short`: (none)
+/// - `positional`: `false` (this is a meta‑argument that collects everything left).
+///   This constant is used internally to access any leftover arguments after
+///   all defined flags/options have been processed.
+pub const REMAINS: PickerArg<PickerArgs> = PickerArg::<PickerArgs> {
+    full: &[],
+    short: None,
+    positional: false,
+    internal_type: PhantomData,
+};
+
+/// Help flag: display usage information.
+/// - `full`: `["help"]`
+/// - `short`: `'h'`
+pub const HELP_FLAG: PickerArg<Flag> = PickerArg::<Flag> {
+    full: &["help"],
+    short: Some('h'),
+    positional: false,
+    internal_type: PhantomData,
+};
+
+/// Quiet flag: suppress output.
+/// - `full`: `["quiet"]`
+/// - `short`: `'q'`
+pub const QUIET_FLAG: PickerArg<Flag> = PickerArg::<Flag> {
+    full: &["quiet"],
+    short: Some('q'),
+    positional: false,
+    internal_type: PhantomData,
+};
+
+/// Confirm flag: require user confirmation before proceeding.
+/// - `full`: `["confirm"]`
+/// - `short`: `'C'`
+pub const CONFIRM_FLAG: PickerArg<Flag> = PickerArg::<Flag> {
+    full: &["confirm"],
+    short: Some('C'),
+    positional: false,
+    internal_type: PhantomData,
+};
+
+/// Renderer flag: explicitly specify the Structural Renderer argument.
+/// - `full`: `["renderer"]`
+/// - `short`: (none)
+#[cfg(feature = "structural_renderer")]
+pub const RENDERER_ARG: PickerArg<String> = PickerArg::<String> {
+    full: &["renderer"],
+    short: None,
+    positional: false,
+    internal_type: PhantomData,
+};
+
+/// JSON flag: enable JSON output format.
+/// - `full`: `["json"]`
+/// - `short`: (none)
+///   Available only when the `json_serde_fmt` feature is enabled.
+#[cfg(feature = "json_serde_fmt")]
+pub const JSON_FLAG: PickerArg<Flag> = PickerArg::<Flag> {
+    full: &["json"],
+    short: None,
+    positional: false,
+    internal_type: PhantomData,
+};
+
+/// JSON pretty flag: enable pretty-printed JSON output format.
+/// - `full`: `["json_pretty"]`
+/// - `short`: (none)
+///   Available only when the `json_serde_fmt` feature is enabled.
+#[cfg(feature = "json_serde_fmt")]
+pub const JSON_PRETTY_FLAG: PickerArg<Flag> = PickerArg::<Flag> {
+    full: &["json_pretty"],
+    short: None,
+    positional: false,
+    internal_type: PhantomData,
+};
+
+/// YAML flag: enable YAML output format.
+/// - `full`: `["yaml"]`
+/// - `short`: (none)
+///   Available only when the `yaml_serde_fmt` feature is enabled.
+#[cfg(feature = "yaml_serde_fmt")]
+pub const YAML_FLAG: PickerArg<Flag> = PickerArg::<Flag> {
+    full: &["yaml"],
+    short: None,
+    positional: false,
+    internal_type: PhantomData,
+};
+
+/// TOML flag: enable TOML output format.
+/// - `full`: `["toml"]`
+/// - `short`: (none)
+///   Available only when the `toml_serde_fmt` feature is enabled.
+#[cfg(feature = "toml_serde_fmt")]
+pub const TOML_FLAG: PickerArg<Flag> = PickerArg::<Flag> {
+    full: &["toml"],
+    short: None,
+    positional: false,
+    internal_type: PhantomData,
+};
+
+/// RON flag: enable RON output format.
+/// - `full`: `["ron"]`
+/// - `short`: (none)
+///   Available only when the `ron_serde_fmt` feature is enabled.
+#[cfg(feature = "ron_serde_fmt")]
+pub const RON_FLAG: PickerArg<Flag> = PickerArg::<Flag> {
+    full: &["ron"],
+    short: None,
+    positional: false,
+    internal_type: PhantomData,
+};
+
+/// RON pretty flag: enable pretty-printed RON output format.
+/// - `full`: `["ron_pretty"]`
+/// - `short`: (none)
+///   Available only when the `ron_serde_fmt` feature is enabled.
+#[cfg(feature = "ron_serde_fmt")]
+pub const RON_PRETTY_FLAG: PickerArg<Flag> = PickerArg::<Flag> {
+    full: &["ron_pretty"],
+    short: None,
+    positional: false,
+    internal_type: PhantomData,
+};