Sanitize Herdr status text only at the OSC boundaryv0.1.0

Stop rewriting tool and command names into ASCII labels before Herdr sees
them, so its label selection and truncation work on the real names. Replace
non-printable characters only when encoding the OSC 7501 msg field, whose
free-text payload forbids controls.

1 files changed, 11 insertions, 7 deletions

diff --git a/panto-report-status/init.lua b/panto-report-status/init.lua
index 07c6110..e2fe5c6 100644
--- a/panto-report-status/init.lua
+++ b/panto-report-status/init.lua
@@ -13,16 +13,16 @@ local function base64(text)
    return table.concat(out)
 end
 
--- Names are diagnostic labels, not arbitrary terminal text. Keep messages short,
--- ASCII and control-free even when a tool or command supplies an unusual name.
-local function label(name)
-   return (name or "?"):gsub("[^ -~]", "?"):sub(1, 27)
+local function tool_status(name)
+   name = name or "?"
+   return "tool:" .. name:sub(1, 27)
 end
 
 local function command_status(name)
+   name = name or "?"
    if name == "compact" then return "compacting" end
    if name == "!" or name == "!!" then return "shell" end
-   return "cmd:" .. label(name)
+   return "cmd:" .. name:sub(1, 28)
 end
 
 return {
@@ -56,7 +56,11 @@ return {
          -- put control sequences in a pipe, file, or a different terminal.
          if terminal_key() ~= terminal then return end
          local sequence = "\27]7501;state=" .. state .. ":app=panto"
-         if status then sequence = sequence .. ":msg=" .. base64(status) end
+         if status then
+            -- Preserve Herdr's label selection/truncation; sanitize only at
+            -- the OSC boundary, whose free-text fields forbid controls.
+            sequence = sequence .. ":msg=" .. base64((status:gsub("[^ -~]", "?")))
+         end
          sequence = sequence .. "\27\\"
          local offset = 0
          while offset < #sequence do
@@ -105,7 +109,7 @@ return {
       panto.ext.on("render_compaction", function()
          if foreground_working then foreground("compacting") end
       end)
-      panto.ext.on("render_tool_details", function(event) foreground("tool:" .. label(event.tool_name)) end)
+      panto.ext.on("render_tool_details", function(event) foreground(tool_status(event.tool_name)) end)
       panto.ext.on("render_assistant_text", function() foreground("responding") end)
       panto.ext.on("turn_end", finish)
       panto.ext.on("background_work_start", function()