feat(commands): step the remaining inquiry / solid commands (bucket E)

- ValuePromptCommand: CAL/QUICKCALC/QC (expression), FIND, FINDALL (search).
- SelectThenKeywordCommand (select the solid, then axis + value): SECTION,
  SLICE, 3DMIRROR, 3DROTATE. SLICE's optional TOP/BOTTOM stays typeable.
- TwoValuePromptCommand: PYRAMID (radius + height; sides typeable).

Left as-is by design: UNDO (bare already undoes one step — a correct default,
not a usage line); POLYSOLID (select a polyline then width + height — needs a
two-value-after-selection form) and 3DALIGN (six 3-D points) stay typeable.

src/app/commands/inquiry.rs

@@ -55,10 +55,13 @@ impl OpenCADStudio {
 
             // CAL / QUICKCALC <expression> — evaluate an arithmetic expression
             //   (+ - * /, parentheses, unary minus, decimals).
-            cmd if cmd == "CAL"
-                || cmd == "QUICKCALC"
-                || cmd == "QC"
-                || cmd.starts_with("CAL ")
+            "CAL" | "QUICKCALC" | "QC" => {
+                use crate::command::ValuePromptCommand;
+                let c = ValuePromptCommand::new("CAL", "CAL  expression  (e.g. (2+3)*4):");
+                self.command_line.push_info(&c.prompt());
+                self.tabs[self.active_tab].active_cmd = Some(Box::new(c));
+            }
+            cmd if cmd.starts_with("CAL ")
                 || cmd.starts_with("QUICKCALC ")
                 || cmd.starts_with("QC ") =>
             {
@@ -922,11 +925,25 @@ impl OpenCADStudio {
             // FIND <search>              — list all Text/MText/Dimension containing <search>
             // FIND <search> REPLACE <rep> — replace first occurrence (case-insensitive)
             // FINDALL <search> REPLACE <rep> — replace all occurrences
-            cmd if cmd == "FIND"
-                || cmd.starts_with("FIND ")
-                || cmd == "FINDALL"
-                || cmd.starts_with("FINDALL ") =>
-            {
+            "FIND" => {
+                use crate::command::ValuePromptCommand;
+                let c = ValuePromptCommand::new(
+                    "FIND",
+                    "FIND  text to find  (add REPLACE <text> by typing):",
+                );
+                self.command_line.push_info(&c.prompt());
+                self.tabs[self.active_tab].active_cmd = Some(Box::new(c));
+            }
+            "FINDALL" => {
+                use crate::command::ValuePromptCommand;
+                let c = ValuePromptCommand::new(
+                    "FINDALL",
+                    "FINDALL  text to find  (add REPLACE <text> by typing):",
+                );
+                self.command_line.push_info(&c.prompt());
+                self.tabs[self.active_tab].active_cmd = Some(Box::new(c));
+            }
+            cmd if cmd.starts_with("FIND ") || cmd.starts_with("FINDALL ") => {
                 let all_mode = cmd.starts_with("FINDALL");
                 let rest = cmd.split_once(' ').map(|(_, r)| r.trim()).unwrap_or("");