refactor: derive canonical commands from core actions and centralize aliases

src/main.rs

@@ -36,9 +36,11 @@ Insert: Ctrl+n requests LSP completion at primary caret, then cycles next; Ctrl+
         Snippets expand fully: type replaces argument, Tab/Shift+Tab next/previous, final $0 ends
         Outside snippets Enter inserts newline, Tab inserts tab; Esc keeps text and returns to Normal
 Search: Enter finds next literal match, Esc cancels (case-sensitive, wraps)
-Commands: :w [PATH], :q, :q!, :wq [PATH], :plugins, :PLUGIN [ARGS]
-Buffers: :edit PATH, :buffers, :buffer N, :bnext, :bprev, :bdelete[!] [N]
-         :q refuses any dirty buffer; :wq saves active and quits only if all are clean
+Commands: :save [PATH], :quit, :force_quit, :save_and_quit [PATH], :plugins, :PLUGIN [ARGS]
+Aliases: w=save, q=quit, q!=force_quit, wq=save_and_quit
+Buffers: :edit PATH, :buffers, :buffer N, :buffer_next, :buffer_previous, :buffer_delete [N], :buffer_force_delete [N]
+         Aliases: bnext, bprev, bdelete, bdelete!; arguments and safety rules are unchanged
+         :quit refuses any dirty buffer; :save_and_quit saves active and quits only if all are clean
 Markdown links: :follow_link (primary caret; local files only)
 Diff: :diff (Normal); choose Before then After; Working checkout After edits live unsaved buffers
       Before and historical/remote After stay read-only; Tab/Shift+Tab categories/Normal focus