Insert Part dialog (SOLID > INSERT > Insert Fastener)

The standard parts library by type (with its ISO standard), size and length, the size's table
values and a picture of the part; picking a hole's wall or rim seats it there with a rigid joint
(the live preview shows it seated), without a pick it goes at the origin. Opens on
FusionFastenersCommand (and parts.insert); OK runs FusionFastenersCommand. Its own icon.
Insert's world picks (`at`, `point`, `direction`) go through the component frames like other
picks. Tests for the library parsing and the insert parameters; checked in the app: an M3 socket
head cap screw seated in a drilled hole with its joint.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

crates/ui-egui/src/dialogs.rs

@@ -215,6 +215,8 @@ pub enum Kind {
     Appearance(crate::dialogs_appearance::Ap),
     /// Contact sets, motion studies, exploded views, configurations (`dialogs_motion`).
     Motion(crate::dialogs_motion::Mo),
+    /// Insert Part from the standard parts library (`dialogs_parts`).
+    Part(crate::dialogs_parts::Pt),
 }
 
 /// The rest of the Hole dialog: placement, extents, tap type and drill point.
@@ -413,7 +415,8 @@ impl Dialog {
                     .or_else(|| crate::dialogs_sheet::start(app, id))
                     .or_else(|| crate::dialogs_plastic::start(app, id))
                     .or_else(|| crate::dialogs_appearance::start(app, id))
-                    .or_else(|| crate::dialogs_motion::start(app, id))?;
+                    .or_else(|| crate::dialogs_motion::start(app, id))
+                    .or_else(|| crate::dialogs_parts::start(app, id))?;
                 Dialog::new(kind, inputs)
             }
         };
@@ -514,6 +517,7 @@ impl Dialog {
             Kind::Assembly(k) => return k.previews(),
             Kind::Sheet(k) => return k.previews(),
             Kind::Plastic(k) => return k.previews(),
+            Kind::Part(_) => return true,
             _ => {}
         }
         matches!(
@@ -773,6 +777,7 @@ fn title(k: &Kind) -> &'static str {
         Kind::Plastic(k) => k.title(),
         Kind::Appearance(_) => "APPEARANCE",
         Kind::Motion(k) => k.title(),
+        Kind::Part(_) => "INSERT PART",
     }
 }
 
@@ -1493,6 +1498,7 @@ pub fn show(app: &mut SolveApp, ctx: &egui::Context) {
                     Kind::Plastic(k) => enter |= crate::dialogs_plastic::rows(app, ui, k, &d.inputs),
                     Kind::Appearance(k) => enter |= crate::dialogs_appearance::rows(app, ui, k, &mut d.inputs),
                     Kind::Motion(k) => enter |= crate::dialogs_motion::rows(app, ui, k, &mut d.inputs),
+                    Kind::Part(k) => enter |= crate::dialogs_parts::rows(app, ui, k, &d.inputs),
                     Kind::ConfirmDelete { with, fail, .. } => {
                         if !with.is_empty() {
                             row_label(ui, "Also deletes");
@@ -2127,6 +2133,7 @@ fn dialog_commands(app: &SolveApp, d: &Dialog) -> Result<Vec<(String, Value)>, S
         Kind::Plastic(k) => return crate::dialogs_plastic::commands(app, k, &d.inputs, &d.extra),
         Kind::Appearance(k) => return Ok(crate::dialogs_appearance::commands(k, &d.inputs)),
         Kind::Motion(k) => return crate::dialogs_motion::commands(app, k, &d.inputs),
+        Kind::Part(k) => return crate::dialogs_parts::commands(app, k, &d.inputs),
     };
     let mut params = params;
     if let Value::Object(m) = &mut params {