Add YouSearch (You.com Research API) provider integration

Amp-Thread-ID: https://ampcode.com/threads/T-019e45ff-4976-750c-b2e6-121d0e5991ef
Co-authored-by: Amp <amp@ampcode.com>

5 files changed, 24 insertions, 0 deletions

diff --git a/internal/appconfig/app_sections.go b/internal/appconfig/app_sections.go
index 6dd60c6..05b3171 100644
--- a/internal/appconfig/app_sections.go
+++ b/internal/appconfig/app_sections.go
@@ -57,6 +57,8 @@ type ProviderConfig struct {
 	AnthropicModel    string   `json:"anthropic_model"`
 	// Default temperature for Anthropic requests (nil means use provider default)
 	AnthropicTemperature *float64 `json:"anthropic_temperature"`
+	// YouSearch options
+	YouSearchResearchEffort string `json:"yousearch_research_effort"` // lite|standard|deep|exhaustive
 	// Per-surface provider/model configurations (ordered; first entry is primary)
 	CompletionConfigs []SurfaceConfig `json:"-"`
 	CodeActionConfigs []SurfaceConfig `json:"-"`
diff --git a/internal/appconfig/config_env.go b/internal/appconfig/config_env.go
index 5f576e0..9834183 100644
--- a/internal/appconfig/config_env.go
+++ b/internal/appconfig/config_env.go
@@ -75,6 +75,8 @@ func applyProviderEnv(out *App, logger *log.Logger) bool {
 		any = true
 	}
 	any = applyEnvFloat(&out.AnthropicTemperature, "HEXAI_ANTHROPIC_TEMPERATURE", logger) || any
+
+	any = applyEnvString(&out.YouSearchResearchEffort, "HEXAI_YOUSEARCH_RESEARCH_EFFORT") || any
 	return any
 }
 
diff --git a/internal/appconfig/config_load.go b/internal/appconfig/config_load.go
index aa169bc..3ed1654 100644
--- a/internal/appconfig/config_load.go
+++ b/internal/appconfig/config_load.go
@@ -205,6 +205,7 @@ func rejectLegacyKeys(raw map[string]any) error {
 	knownTables := map[string]struct{}{
 		"general": {}, "logging": {}, "completion": {}, "triggers": {}, "inline": {},
 		"chat": {}, "provider": {}, "models": {}, "openai": {}, "ollama": {}, "prompts": {},
+		"yousearch": {},
 	}
 	for k := range raw {
 		if _, isTable := knownTables[k]; isTable {
@@ -269,6 +270,7 @@ func applyProviderSections(fc *fileConfig, out *App) {
 	applyOpenRouterSection(fc, out)
 	applyOllamaSection(fc, out)
 	applyAnthropicSection(fc, out)
+	applyYouSearchSection(fc, out)
 }
 
 func applyPromptSections(fc *fileConfig, out *App) {
@@ -430,6 +432,16 @@ func applyAnthropicSection(fc *fileConfig, out *App) {
 	out.mergeProviderFields(&tmp)
 }
 
+func applyYouSearchSection(fc *fileConfig, out *App) {
+	if fc.YouSearch == (sectionYouSearch{}) {
+		return
+	}
+	tmp := App{ProviderConfig: ProviderConfig{
+		YouSearchResearchEffort: fc.YouSearch.ResearchEffort,
+	}}
+	out.mergeProviderFields(&tmp)
+}
+
 func applyPromptCompletion(fc *fileConfig, out *App) {
 	if fc.Prompts.Completion == (sectionPromptsCompletion{}) {
 		return
diff --git a/internal/appconfig/config_merge.go b/internal/appconfig/config_merge.go
index 7a99c94..f3557c1 100644
--- a/internal/appconfig/config_merge.go
+++ b/internal/appconfig/config_merge.go
@@ -141,6 +141,9 @@ func (a *App) mergeProviderFields(other *App) {
 	if other.AnthropicTemperature != nil { // allow explicit 0.0
 		a.AnthropicTemperature = other.AnthropicTemperature
 	}
+	if s := strings.TrimSpace(other.YouSearchResearchEffort); s != "" {
+		a.YouSearchResearchEffort = s
+	}
 }
 
 // mergeSurfaceModels copies per-surface model and temperature overrides.
diff --git a/internal/appconfig/config_types.go b/internal/appconfig/config_types.go
index 5c6cf0c..8d50f35 100644
--- a/internal/appconfig/config_types.go
+++ b/internal/appconfig/config_types.go
@@ -163,6 +163,7 @@ type fileConfig struct {
 	OpenRouter sectionOpenRouter `toml:"openrouter"`
 	Ollama     sectionOllama     `toml:"ollama"`
 	Anthropic  sectionAnthropic  `toml:"anthropic"`
+	YouSearch  sectionYouSearch  `toml:"yousearch"`
 	Prompts    sectionPrompts    `toml:"prompts"`
 	Tmux       sectionTmux       `toml:"tmux"`
 	Stats      sectionStats      `toml:"stats"`
@@ -305,6 +306,10 @@ type sectionAnthropic struct {
 	Temperature *float64 `toml:"temperature"`
 }
 
+type sectionYouSearch struct {
+	ResearchEffort string `toml:"research_effort"` // lite|standard|deep|exhaustive
+}
+
 // Prompts sections
 type sectionPrompts struct {
 	Completion     sectionPromptsCompletion     `toml:"completion"`