feat(config): add config-reload to clear all session overrides (#2819)

Author: tusharmath

crates/forge_main/src/built_in_commands.json

@@ -20,8 +20,8 @@
     "description": "Switch the model for the current session only, without modifying global config [alias: m]"
   },
   {
-    "command": "model-reset",
-    "description": "Reset session model to use global config [alias: mr]"
+    "command": "config-reload",
+    "description": "Reset all session overrides (model, provider, reasoning effort) to use global config [alias: cr]"
   },
   {
     "command": "reasoning-effort",

shell-plugin/lib/actions/config.zsh

@@ -358,21 +358,23 @@ function _forge_action_session_model() {
     fi
 }
 
-# Action handler: Reset session model and provider to defaults.
-# Clears both _FORGE_SESSION_MODEL and _FORGE_SESSION_PROVIDER,
-# reverting to global config for subsequent forge invocations.
-function _forge_action_model_reset() {
+# Action handler: Reload config by resetting all session-scoped overrides.
+# Clears _FORGE_SESSION_MODEL, _FORGE_SESSION_PROVIDER, and
+# _FORGE_SESSION_REASONING_EFFORT so that every subsequent forge invocation
+# falls back to the permanent global configuration.
+function _forge_action_config_reload() {
     echo
 
-    if [[ -z "$_FORGE_SESSION_MODEL" && -z "$_FORGE_SESSION_PROVIDER" ]]; then
-        _forge_log info "Session model already cleared (using global config)"
+    if [[ -z "$_FORGE_SESSION_MODEL" && -z "$_FORGE_SESSION_PROVIDER" && -z "$_FORGE_SESSION_REASONING_EFFORT" ]]; then
+        _forge_log info "No session overrides active (already using global config)"
         return 0
     fi
 
     _FORGE_SESSION_MODEL=""
     _FORGE_SESSION_PROVIDER=""
+    _FORGE_SESSION_REASONING_EFFORT=""
 
-    _forge_log success "Session model reset to global config"
+    _forge_log success "Session overrides cleared — using global config"
 }
 
 # Action handler: Select reasoning effort for the current session only.

shell-plugin/lib/config.zsh

@@ -34,3 +34,7 @@ typeset -h _FORGE_PREVIOUS_CONVERSATION_ID
 # invocation for the lifetime of the current shell session.
 typeset -h _FORGE_SESSION_MODEL
 typeset -h _FORGE_SESSION_PROVIDER
+
+# Session-scoped reasoning effort override (set via :reasoning-effort / :re).
+# When non-empty, exported as FORGE_REASONING__EFFORT for every forge invocation.
+typeset -h _FORGE_SESSION_REASONING_EFFORT

shell-plugin/lib/dispatcher.zsh

@@ -175,8 +175,8 @@ function forge-accept-line() {
         model|m)
             _forge_action_session_model "$input_text"
         ;;
-        model-reset|mr)
-            _forge_action_model_reset
+        config-reload|cr|model-reset|mr)
+            _forge_action_config_reload
         ;;
         reasoning-effort|re)
             _forge_action_reasoning_effort "$input_text"