Register all sketch-constraint commands in the autocomplete registry

None of the 17 constraint commands (HCONSTRAINT, VCONSTRAINT,
PCONSTRAINT, QCONSTRAINT, ECONSTRAINT, TCONSTRAINT, NCONSTRAINT,
NRCONSTRAINT, LCONSTRAINT, FXCONSTRAINT, SYCONSTRAINT, CCONSTRAINT,
EDCONSTRAINT, CPCONSTRAINT, MPCONSTRAINT, OCCONSTRAINT, DCONSTRAINT,
ACONSTRAINT) carried an inventory::submit! registration, so they were
invisible to command-line autocomplete, the MCP commands listing, and
the ALIASEDIT shortcut editor (which rejects a custom shortcut target
that isn't in this same registry). Each constraint module now
registers itself, with a regression test pinning the full set.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

src/modules/draw/constrain/coincident.rs

@@ -71,3 +71,6 @@ impl CadCommand for CoincidentConstraintCommand {
         CmdResult::Cancel
     }
 }
+
+// ── Autocomplete registry ─────────────────────────────────
+inventory::submit!(crate::command::CommandRegistration { names: &["CCONSTRAINT"] });

src/modules/draw/constrain/equal_distance.rs

@@ -65,3 +65,6 @@ impl CadCommand for EqualDistanceConstraintCommand {
         CmdResult::Cancel
     }
 }
+
+// ── Autocomplete registry ─────────────────────────────────
+inventory::submit!(crate::command::CommandRegistration { names: &["EDCONSTRAINT"] });

src/modules/draw/constrain/point_on_entity.rs

@@ -89,3 +89,6 @@ impl CadCommand for PointOnEntityConstraintCommand {
         CmdResult::Cancel
     }
 }
+
+// ── Autocomplete registry ─────────────────────────────────
+inventory::submit!(crate::command::CommandRegistration { names: &["CPCONSTRAINT", "MPCONSTRAINT", "OCCONSTRAINT"] });

src/modules/draw/constrain/tools.rs

@@ -141,3 +141,20 @@ pub mod symmetric {
         }
     }
 }
+
+// ── Autocomplete registry ─────────────────────────────────
+inventory::submit!(crate::command::CommandRegistration {
+    names: &[
+        "HCONSTRAINT",
+        "VCONSTRAINT",
+        "PCONSTRAINT",
+        "QCONSTRAINT",
+        "ECONSTRAINT",
+        "TCONSTRAINT",
+        "NCONSTRAINT",
+        "NRCONSTRAINT",
+        "LCONSTRAINT",
+        "FXCONSTRAINT",
+        "SYCONSTRAINT",
+    ]
+});

src/modules/draw/constrain/value.rs

@@ -307,6 +307,9 @@ impl CadCommand for AngleConstraintCommand {
     }
 }
 
+// ── Autocomplete registry ─────────────────────────────────
+inventory::submit!(crate::command::CommandRegistration { names: &["DCONSTRAINT", "ACONSTRAINT"] });
+
 #[cfg(test)]
 mod tests {
     use super::*;