ci: add GitHub Actions workflows with semantic-release auto-versioning

chore: fix all 702 clippy warnings across codebase
- auto-fix 475 via cargo clippy --fix
- fix remaining 227 manually: uninlined_format_args, redundant_closure, match_same_arms,
  underscore_binding, format_push_string, items_after_statements, needless_pass_by_value,
  clone_on_copy, case_sensitive_extension, single_match/let-else, write_with_newline,
  and other clippy lints

src/view/workflow.rs

@@ -55,6 +55,7 @@ fn is_company_pipeline(agents: &[crate::app::workflow::engine::WorkflowAgent]) -
 }
 
 /// Render the workflow status panel.
+#[allow(clippy::too_many_lines)]
 pub fn draw_workflow_panel(frame: &mut Frame, area: Rect, state: &crate::app::state::rest::AppStateRest) {
     use ratatui::layout::{Constraint, Direction, Layout};
 
@@ -179,7 +180,7 @@ pub fn draw_workflow_panel(frame: &mut Frame, area: Rect, state: &crate::app::st
             // Agent card header
             card_lines.push(Line::from(vec![
                 Span::styled(
-                    format!(" {} ", icon),
+                    format!(" {icon} "),
                     Style::default().fg(color).add_modifier(Modifier::BOLD),
                 ),
                 Span::styled(
@@ -187,7 +188,7 @@ pub fn draw_workflow_panel(frame: &mut Frame, area: Rect, state: &crate::app::st
                     Style::default().fg(Theme::TEXT).add_modifier(Modifier::BOLD),
                 ),
                 Span::styled(
-                    format!(" [{}]", label),
+                    format!(" [{label}]"),
                     Style::default().fg(color),
                 ),
                 Span::styled(
@@ -240,18 +241,18 @@ fn build_session_lines(state: &crate::app::state::rest::AppStateRest) -> Vec<Lin
         ]));
         lines.push(Line::from(vec![
             Span::styled(" Tool calls", Style::default().fg(Theme::TEXT_DIM)),
-            Span::styled(format!(" {}", tool_count), Style::default().fg(Theme::SUCCESS)),
+            Span::styled(format!(" {tool_count}"), Style::default().fg(Theme::SUCCESS)),
         ]));
         if pending > 0 {
             lines.push(Line::from(vec![
                 Span::styled(" Pending   ", Style::default().fg(Theme::TEXT_DIM)),
-                Span::styled(format!(" {}", pending), Style::default().fg(Theme::WARNING)),
+                Span::styled(format!(" {pending}"), Style::default().fg(Theme::WARNING)),
             ]));
         }
         if bash_count > 0 {
             lines.push(Line::from(vec![
                 Span::styled(" Bash jobs ", Style::default().fg(Theme::TEXT_DIM)),
-                Span::styled(format!(" {}", bash_count), Style::default().fg(Theme::WARNING)),
+                Span::styled(format!(" {bash_count}"), Style::default().fg(Theme::WARNING)),
             ]));
         }
     } else {