docs: tambah doc comment, logging, dan inline comments di semua 255 file

Meliputi:
- File-level //! doc comment: tujuan file, alur kerja, komponen utama
- Function-level /// doc comment: apa, parameter, return, flow, edge cases
- Struct/enum/trait /// doc comment: peran, field docs
- Tracing logging (tracing::info!/debug!/trace!/warn!/error!) di setiap fungsi
- Inline comments untuk variable dan branching logic penting
- Seluruh 8 crates di workspace: zesdex-backend, zesdex-cms, zesdex-entities,
  zesdex-iam, zesdex-infra, zesdex-ipc, zesdex-middleware, zesdex-utils
- Build: 0 errors, 242/242 tests passed

crates/zesdex-backend/src/view/workflow.rs

@@ -14,6 +14,7 @@ use ratatui::style::{Color, Modifier, Style};
 use ratatui::text::{Line, Span};
 use ratatui::widgets::{Block, Borders, Paragraph, Wrap};
 use ratatui::Frame;
+use tracing;
 
 /// Icons for agent states.
 fn state_icon(state: AgentState) -> &'static str {
@@ -51,6 +52,11 @@ pub fn draw_workflow_panel(
     area: Rect,
     state: &crate::app::state::rest::AppStateRest,
 ) {
+    tracing::trace!(
+        "draw_workflow_panel: agents={}, findings={}",
+        state.workflow_engine.agents.len(),
+        state.workflow_engine.findings.len(),
+    );
     use ratatui::layout::{Constraint, Direction, Layout};
 
     let title = Span::styled(