Fix Zed and VS Code config paths on Windows

Add cbm_app_config_dir() and cbm_app_local_dir() platform helpers:
- Windows: %APPDATA% / %LOCALAPPDATA%
- macOS: $HOME for Library/Application Support paths
- Linux: $XDG_CONFIG_HOME or ~/.config

Update all 6 Zed/VS Code path locations (detect, install, uninstall).
macOS uses $HOME directly for Library paths; Windows/Linux use the
new helpers. Consolidates userconfig.c XDG logic into platform.c.

Co-Authored-By: jimpark <jimpark@users.noreply.github.com>

Author: DeusData

src/cli/cli.c

@@ -975,8 +975,20 @@ cbm_detected_agents_t cbm_detect_agents(const char *home_dir) {
 
 #ifdef __APPLE__
     snprintf(path, sizeof(path), "%s/Library/Application Support/Zed", home_dir);
+#elif defined(_WIN32)
+    {
+        const char *zed_local = cbm_app_local_dir();
+        if (zed_local) {
+            snprintf(path, sizeof(path), "%s/Zed", zed_local);
+        }
+    }
 #else
-    snprintf(path, sizeof(path), "%s/.config/zed", home_dir);
+    {
+        const char *zed_cfg = cbm_app_config_dir();
+        if (zed_cfg) {
+            snprintf(path, sizeof(path), "%s/zed", zed_cfg);
+        }
+    }
 #endif
     agents.zed = dir_exists(path);
 
@@ -996,7 +1008,12 @@ cbm_detected_agents_t cbm_detect_agents(const char *home_dir) {
 #ifdef __APPLE__
     snprintf(path, sizeof(path), "%s/Library/Application Support/Code/User", home_dir);
 #else
-    snprintf(path, sizeof(path), "%s/.config/Code/User", home_dir);
+    {
+        const char *vs_cfg = cbm_app_config_dir();
+        if (vs_cfg) {
+            snprintf(path, sizeof(path), "%s/Code/User", vs_cfg);
+        }
+    }
 #endif
     agents.vscode = dir_exists(path);
 
@@ -2711,8 +2728,10 @@ static void install_editor_agent_configs(const cbm_detected_agents_t *agents, co
         char cp[CLI_BUF_1K];
 #ifdef __APPLE__
         snprintf(cp, sizeof(cp), "%s/Library/Application Support/Zed/settings.json", home);
+#elif defined(_WIN32)
+        snprintf(cp, sizeof(cp), "%s/Zed/settings.json", cbm_app_local_dir());
 #else
-        snprintf(cp, sizeof(cp), "%s/.config/zed/settings.json", home);
+        snprintf(cp, sizeof(cp), "%s/zed/settings.json", cbm_app_config_dir());
 #endif
         install_generic_agent_config("Zed", binary_path, cp, NULL, dry_run, cbm_install_zed_mcp);
     }
@@ -2731,7 +2750,7 @@ static void install_editor_agent_configs(const cbm_detected_agents_t *agents, co
 #ifdef __APPLE__
         snprintf(cp, sizeof(cp), "%s/Library/Application Support/Code/User/mcp.json", home);
 #else
-        snprintf(cp, sizeof(cp), "%s/.config/Code/User/mcp.json", home);
+        snprintf(cp, sizeof(cp), "%s/Code/User/mcp.json", cbm_app_config_dir());
 #endif
         install_generic_agent_config("VS Code", binary_path, cp, NULL, dry_run,
                                      cbm_install_vscode_mcp);
@@ -2983,8 +3002,10 @@ static void uninstall_editor_agents(const cbm_detected_agents_t *agents, const c
         char cp[CLI_BUF_1K];
 #ifdef __APPLE__
         snprintf(cp, sizeof(cp), "%s/Library/Application Support/Zed/settings.json", home);
+#elif defined(_WIN32)
+        snprintf(cp, sizeof(cp), "%s/Zed/settings.json", cbm_app_local_dir());
 #else
-        snprintf(cp, sizeof(cp), "%s/.config/zed/settings.json", home);
+        snprintf(cp, sizeof(cp), "%s/zed/settings.json", cbm_app_config_dir());
 #endif
         uninstall_agent_mcp_instr((mcp_uninstall_args_t){"Zed", cp, NULL}, dry_run,
                                   cbm_remove_zed_mcp);
@@ -3004,7 +3025,7 @@ static void uninstall_editor_agents(const cbm_detected_agents_t *agents, const c
 #ifdef __APPLE__
         snprintf(cp, sizeof(cp), "%s/Library/Application Support/Code/User/mcp.json", home);
 #else
-        snprintf(cp, sizeof(cp), "%s/.config/Code/User/mcp.json", home);
+        snprintf(cp, sizeof(cp), "%s/Code/User/mcp.json", cbm_app_config_dir());
 #endif
         uninstall_agent_mcp_instr((mcp_uninstall_args_t){"VS Code", cp, NULL}, dry_run,
                                   cbm_remove_vscode_mcp);

src/discover/userconfig.c

@@ -152,25 +152,7 @@ static CBMLanguage lang_from_string(const char *s) {
 
 /* ── Config directory helper ─────────────────────────────────────── */
 
-/*
- * Get the XDG config dir for codebase-memory-mcp.
- * Writes "<dir>/codebase-memory-mcp" into buf (up to bufsz bytes).
- * Uses $XDG_CONFIG_HOME if set, else ~/.config.
- */
-static void cbm_app_config_dir(char *buf, size_t bufsz) {
-    char xdg[CBM_SZ_512] = {0};
-    cbm_safe_getenv("XDG_CONFIG_HOME", xdg, sizeof(xdg), NULL);
-    if (xdg[0]) {
-        snprintf(buf, bufsz, "%s/codebase-memory-mcp", xdg);
-    } else {
-        char home[CBM_SZ_512] = {0};
-        cbm_safe_getenv("HOME", home, sizeof(home), NULL);
-        if (!home[0]) {
-            snprintf(home, sizeof(home), "/tmp");
-        }
-        snprintf(buf, bufsz, "%s/.config/codebase-memory-mcp", home);
-    }
-}
+/* cbm_app_config_dir() is now in platform.c (cross-platform). */
 
 /* ── JSON parsing ────────────────────────────────────────────────── */
 
@@ -312,11 +294,10 @@ cbm_userconfig_t *cbm_userconfig_load(const char *repo_path) {
 
     /* ── Step 1: Load global config ── */
     enum { PATH_BUF_SZ = 1280 };
-    char global_dir[CBM_SZ_1K];
-    cbm_app_config_dir(global_dir, sizeof(global_dir));
-
+    const char *cfg_base = cbm_app_config_dir();
+    const char *cfg_fallback = cfg_base ? cfg_base : "/tmp";
     char global_path[PATH_BUF_SZ];
-    snprintf(global_path, sizeof(global_path), "%s/config.json", global_dir);
+    snprintf(global_path, sizeof(global_path), "%s/codebase-memory-mcp/config.json", cfg_fallback);
 
     if (load_config_file(global_path, &entries, &count) != 0) {
         for (int i = 0; i < count; i++) {

src/foundation/platform.c

@@ -299,3 +299,58 @@ const char *cbm_get_home_dir(void) {
     }
     return NULL;
 }
+
+/* ── App config directories (cross-platform) ─────────────────── */
+
+const char *cbm_app_config_dir(void) {
+    static char buf[CBM_SZ_1K];
+    char tmp[CBM_SZ_256] = "";
+#ifdef _WIN32
+    cbm_safe_getenv("APPDATA", tmp, sizeof(tmp), NULL);
+    if (tmp[0]) {
+        snprintf(buf, sizeof(buf), "%s", tmp);
+        cbm_normalize_path_sep(buf);
+        return buf;
+    }
+    const char *home = cbm_get_home_dir();
+    if (home) {
+        snprintf(buf, sizeof(buf), "%s/AppData/Roaming", home);
+        return buf;
+    }
+    return NULL;
+#else
+    /* Linux: XDG_CONFIG_HOME or ~/.config */
+    cbm_safe_getenv("XDG_CONFIG_HOME", tmp, sizeof(tmp), NULL);
+    if (tmp[0]) {
+        snprintf(buf, sizeof(buf), "%s", tmp);
+        return buf;
+    }
+    const char *home = cbm_get_home_dir();
+    if (home) {
+        snprintf(buf, sizeof(buf), "%s/.config", home);
+        return buf;
+    }
+    return NULL;
+#endif /* _WIN32 */
+}
+
+const char *cbm_app_local_dir(void) {
+#ifdef _WIN32
+    static char buf[CBM_SZ_1K];
+    char tmp[CBM_SZ_256] = "";
+    cbm_safe_getenv("LOCALAPPDATA", tmp, sizeof(tmp), NULL);
+    if (tmp[0]) {
+        snprintf(buf, sizeof(buf), "%s", tmp);
+        cbm_normalize_path_sep(buf);
+        return buf;
+    }
+    const char *home = cbm_get_home_dir();
+    if (home) {
+        snprintf(buf, sizeof(buf), "%s/AppData/Local", home);
+        return buf;
+    }
+    return NULL;
+#else
+    return cbm_app_config_dir();
+#endif
+}

src/foundation/platform.h

@@ -81,6 +81,18 @@ const char *cbm_safe_getenv(const char *name, char *buf, size_t buf_sz, const ch
  * Returns NULL when neither is set. */
 const char *cbm_get_home_dir(void);
 
+/* ── App config directories ────────────────────────────────────── */
+
+/* Cross-platform app config directory (static buffer, not thread-safe).
+ * Windows: %APPDATA% (e.g. C:/Users/.../AppData/Roaming)
+ * macOS:   $HOME (callers append Library/Application Support/...)
+ * Linux:   $XDG_CONFIG_HOME or ~/.config */
+const char *cbm_app_config_dir(void);
+
+/* Windows: %LOCALAPPDATA% (e.g. C:/Users/.../AppData/Local)
+ * macOS/Linux: same as cbm_app_config_dir(). */
+const char *cbm_app_local_dir(void);
+
 /* ── File system ───────────────────────────────────────────────── */
 
 /* Check if a path exists. */