Remove hexai-tmux-edit popup editor featurev0.42.0

The tmux popup editor and its per-agent detection (Cursor/Amp/Aider)
added maintenance surface without enough use to justify it; Codex and
Claude Code already support external-editor mode natively via Ctrl+G.
Drops internal/tmuxedit, cmd/hexai-tmux-edit, the [tmux_edit] config
schema, the Mage build target, and all related docs/README mentions.

Bump version to 0.42.0.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

1 files changed, 0 insertions, 182 deletions

diff --git a/internal/tmuxedit/config_agent_test.go b/internal/tmuxedit/config_agent_test.go
deleted file mode 100644
index 666525d..0000000
--- a/internal/tmuxedit/config_agent_test.go
+++ /dev/null
@@ -1,182 +0,0 @@
-package tmuxedit
-
-import (
-	"testing"
-
-	"codeberg.org/snonux/hexai/internal/appconfig"
-)
-
-func boolP(b bool) *bool { return &b }
-
-func TestResolveAgents_MergeOverride(t *testing.T) {
-	// Override the built-in "amp" agent to verify config merging preserves
-	// builtin fields (detectPattern) while applying user overrides (DisplayName, ClearFirst).
-	cfgAgents := []appconfig.TmuxEditAgentCfg{
-		{
-			Name:        "amp",
-			DisplayName: "My Amp",
-			ClearFirst:  boolP(false),
-		},
-	}
-	agents := resolveAgents(cfgAgents)
-	var amp Agent
-	for _, a := range agents {
-		if a.Name() == "amp" {
-			amp = a
-			break
-		}
-	}
-	if amp == nil {
-		t.Fatal("amp agent not found")
-	}
-	if amp.DisplayName() != "My Amp" {
-		t.Errorf("DisplayName = %q, want My Amp", amp.DisplayName())
-	}
-	// ClearInput should be no-op after override to false
-	c := amp.(Configurable)
-	if c.Base().clearFirst {
-		t.Error("clearFirst should be false after override")
-	}
-	// DetectPattern should be preserved from builtin
-	if c.Base().detectPattern == "" {
-		t.Error("detectPattern should be preserved from builtin")
-	}
-}
-
-func TestResolveAgents_MergeAllFields(t *testing.T) {
-	// Override the built-in "aider" agent with all fields to verify full merging.
-	cfgAgents := []appconfig.TmuxEditAgentCfg{
-		{
-			Name:          "aider",
-			DisplayName:   "Custom Aider",
-			DetectPattern: "(?i)custom-aider",
-			PromptPattern: `>\s+(.*)$`,
-			StripPatterns: []string{"NOISE"},
-			ClearFirst:    boolP(true),
-			ClearKeys:     "C-k",
-			NewlineKeys:   "C-Enter",
-			SubmitKeys:    "C-m",
-		},
-	}
-	agents := resolveAgents(cfgAgents)
-	var a Agent
-	for _, ag := range agents {
-		if ag.Name() == "aider" {
-			a = ag
-			break
-		}
-	}
-	if a == nil {
-		t.Fatal("aider agent not found")
-	}
-	c := a.(Configurable)
-	base := c.Base()
-	if base.detectPattern != "(?i)custom-aider" {
-		t.Errorf("detectPattern = %q", base.detectPattern)
-	}
-	if base.promptPat != `>\s+(.*)$` {
-		t.Errorf("promptPat = %q", base.promptPat)
-	}
-	if len(base.stripPatterns) != 1 || base.stripPatterns[0] != "NOISE" {
-		t.Errorf("stripPatterns = %v", base.stripPatterns)
-	}
-	if base.clearKeys != "C-k" {
-		t.Errorf("clearKeys = %q", base.clearKeys)
-	}
-	if base.newlineKeys != "C-Enter" {
-		t.Errorf("newlineKeys = %q", base.newlineKeys)
-	}
-	if base.submitKeys != "C-m" {
-		t.Errorf("submitKeys = %q", base.submitKeys)
-	}
-}
-
-func TestResolveAgents_AddNew(t *testing.T) {
-	cfgAgents := []appconfig.TmuxEditAgentCfg{
-		{
-			Name:          "custom",
-			DisplayName:   "Custom Agent",
-			DetectPattern: "(?i)custom",
-			PromptPattern: `>\s*(.+)$`,
-			ClearFirst:    boolP(true),
-		},
-	}
-	agents := resolveAgents(cfgAgents)
-	found := false
-	for _, a := range agents {
-		if a.Name() == "custom" {
-			found = true
-			if a.DisplayName() != "Custom Agent" {
-				t.Errorf("DisplayName = %q, want Custom Agent", a.DisplayName())
-			}
-			c := a.(Configurable)
-			if !c.Base().clearFirst {
-				t.Error("clearFirst should be true")
-			}
-		}
-	}
-	if !found {
-		t.Error("custom agent not found in resolved agents")
-	}
-}
-
-func TestAgentFromConfig_DefaultDisplayName(t *testing.T) {
-	cfg := appconfig.TmuxEditAgentCfg{
-		Name: "test",
-	}
-	a := agentFromConfig(cfg)
-	if a.DisplayName() != "test" {
-		t.Errorf("DisplayName = %q, want test (defaulted from Name)", a.DisplayName())
-	}
-}
-
-func TestConfigAgent_ExtractPrompt(t *testing.T) {
-	// Config agent uses baseAgent's default extraction (section-aware)
-	agent := &configAgent{baseAgent{
-		promptPat: `(?m)>\s*(.+)$`,
-	}}
-	content := "> hello world"
-	got := agent.ExtractPrompt(content)
-	if got != "hello world" {
-		t.Errorf("ExtractPrompt() = %q, want %q", got, "hello world")
-	}
-}
-
-func TestConfigAgent_Amp(t *testing.T) {
-	agents := builtinAgents()
-	var amp Agent
-	for _, a := range agents {
-		if a.Name() == "amp" {
-			amp = a
-			break
-		}
-	}
-	if amp == nil {
-		t.Fatal("amp agent not found")
-	}
-	if !amp.Detect("Amp by Sourcegraph") {
-		t.Error("amp should detect 'Amp by Sourcegraph'")
-	}
-	// Amp uses box-drawing TUI format (like cursor), not shell-style > prompt
-	got := amp.ExtractPrompt("│ fix the bug                                                       │")
-	if got != "fix the bug" {
-		t.Errorf("ExtractPrompt() = %q, want %q", got, "fix the bug")
-	}
-}
-
-func TestConfigAgent_Aider(t *testing.T) {
-	agents := builtinAgents()
-	var aider Agent
-	for _, a := range agents {
-		if a.Name() == "aider" {
-			aider = a
-			break
-		}
-	}
-	if aider == nil {
-		t.Fatal("aider agent not found")
-	}
-	if !aider.Detect("aider v0.50") {
-		t.Error("aider should detect 'aider v0.50'")
-	}
-}