feat(function): add a --resume flag to the agy function

The agy tool uses -c and --continue natively. It does not recognize -r
or --resume. This commit allows -r and --resume to be used by
translating them to -c and --continue respectively.

functions/agy.fish

@@ -15,23 +15,25 @@
 #   sub-repository is initialized and any agent-made changes are committed
 #   before launch. Delegates all scaffold and commit logic to agents-init
 #   --quiet (full setup), which ensures AGENTS/ is scaffolded and CLAUDE.md
-#   is symlinked to AGENTS/AGENTS.md in the current project. All arguments
-#   are forwarded verbatim to the real agy binary.
+#   is symlinked to AGENTS/AGENTS.md in the current project. Arguments are
+#   forwarded verbatim to the real agy binary, except for -r/--resume which
+#   are translated to -c/--continue.
 #
 #   Opinionated component (C1): when disabled via __fish_config_op_aliases
 #   (or the __fish_config_opinionated master), the command is passed through
 #   to the real agy binary unchanged.
 #
 # ARGUMENTS
-#   ARGS  Any arguments forwarded verbatim to the underlying agy binary
+#   ARGS  Arguments forwarded to the underlying agy binary (-r translates to -c)
 #
 # EXIT STATUS
 #   Exit status of the underlying agy binary
 #
 # EXAMPLE
 #   agy
-#   agy chat
-#   agy resume
+#   agy --resume
+#   agy -i "initial prompt"
+#   agy models
 function agy --wraps=agy --description 'agy wrapper: auto-initializes AGENTS/ sub-repo before launch'
     if not __fish_config_op_enabled __fish_config_op_aliases
         command agy $argv
@@ -40,5 +42,15 @@ function agy --wraps=agy --description 'agy wrapper: auto-initializes AGENTS/ su
 
     agents-init --quiet
 
+    for i in (seq (count $argv))
+        if test "$argv[$i]" = "-r"
+            set argv[$i] "-c"
+        else if test "$argv[$i]" = "--resume"
+            set argv[$i] "--continue"
+        else if string match -q -- "--resume=*" "$argv[$i]"
+            set argv[$i] (string replace -- "--resume=" "--continue=" "$argv[$i]")
+        end
+    end
+
     command agy $argv
 end