diff --git a/run.sh b/run.sh
index 5a3e7d0..a862547 100644
--- a/run.sh
+++ b/run.sh
@@ -76,12 +76,29 @@ exec >>"${LOG}" 2>&1
 
 hydrate_probe_env
 
+# Clara Colour (spaColour/393): snow protocol, needs mirror_x
 if [ -z "${APP_TOUCH_MIRROR_X}" ] && \
    { [ "${APP_CODENAME}" = "spaColour" ] || [ "${APP_PRODUCT_ID}" = "393" ]; } && \
    [ "${APP_TOUCH_PROTOCOL}" = "snow" ]; then
     APP_TOUCH_MIRROR_X=1
 fi
 
+# Libra Colour (monza/390): standard multitouch, needs mirror_y (not mirror_x)
+if [ -z "${APP_TOUCH_MIRROR_Y}" ] && \
+   { [ "${APP_CODENAME}" = "monza" ] || [ "${APP_PRODUCT_ID}" = "390" ]; }; then
+    APP_TOUCH_MIRROR_Y=1
+fi
+
+# Elipsa 2E (condor/389): standard multitouch, needs mirror_y (not mirror_x)
+if [ -z "${APP_TOUCH_MIRROR_Y}" ] && \
+   { [ "${APP_CODENAME}" = "condor" ] || [ "${APP_PRODUCT_ID}" = "389" ]; }; then
+    APP_TOUCH_MIRROR_Y=1
+fi
+
+if [ -z "${APP_TOUCH_MIRROR_X}" ]; then
+    APP_TOUCH_MIRROR_X=0
+fi
+
 if [ -z "${APP_TOUCH_MIRROR_Y}" ]; then
     APP_TOUCH_MIRROR_Y=0
 fi
diff --git a/src/kobo/bootstrap.cpp b/src/kobo/bootstrap.cpp
index a983375..bd32820 100644
--- a/src/kobo/bootstrap.cpp
+++ b/src/kobo/bootstrap.cpp
@@ -70,9 +70,15 @@ bool file_exists(const char* path) {
 }
 
 Bsky::Session load_saved_session() {
+    const char* config_path = skeets_config_path();
+    std::fprintf(stderr, "bootstrap: load_saved_session: config_path='%s'\n", config_path);
+
     Bsky::Session session;
-    config_t* config = config_open(skeets_config_path());
-    if (!config) return session;
+    config_t* config = config_open(config_path);
+    if (!config) {
+        std::fprintf(stderr, "bootstrap: load_saved_session: config_open returned NULL\n");
+        return session;
+    }
 
     session.handle = config_get_str(config, "handle", "");
     session.access_jwt = config_get_str(config, "access_jwt", "");
@@ -82,6 +88,14 @@ Bsky::Session load_saved_session() {
     session.appview_url = config_get_str(config,
                                          "appview_url",
                                          config_get_str(config, "appview", kDefaultAppView));
+    
+    std::fprintf(stderr, "bootstrap: load_saved_session: loaded handle='%s' did='%s' pds='%s' has_access=%zu has_refresh=%zu\n",
+                 session.handle.empty() ? "(empty)" : session.handle.c_str(),
+                 session.did.empty() ? "(empty)" : session.did.c_str(),
+                 session.pds_url.empty() ? "(empty)" : session.pds_url.c_str(),
+                 session.access_jwt.size(),
+                 session.refresh_jwt.size());
+    
     config_free(config);
     return session;
 }
@@ -91,8 +105,22 @@ bool has_saved_session(const Bsky::Session& session) {
 }
 
 void save_session(const Bsky::Session& session) {
-    config_t* config = config_open(skeets_config_path());
-    if (!config) return;
+    const char* config_path = skeets_config_path();
+
+    if (session.handle.empty() && session.access_jwt.empty() && session.did.empty()) {
+        std::fprintf(stderr, "bootstrap: save_session: SKIPPING — session is empty (would overwrite valid config)\n");
+        return;
+    }
+
+    std::fprintf(stderr, "bootstrap: save_session: saving handle='%s' did='%s' pds='%s' access_len=%zu refresh_len=%zu\n",
+                 session.handle.c_str(), session.did.c_str(), session.pds_url.c_str(),
+                 session.access_jwt.size(), session.refresh_jwt.size());
+
+    config_t* config = config_open(config_path);
+    if (!config) {
+        std::fprintf(stderr, "bootstrap: save_session: config_open returned NULL for '%s'\n", config_path);
+        return;
+    }
 
     config_set_str(config, "handle", session.handle.c_str());
     config_set_str(config, "access_jwt", session.access_jwt.c_str());
@@ -100,7 +128,13 @@ void save_session(const Bsky::Session& session) {
     config_set_str(config, "did", session.did.c_str());
     config_set_str(config, "pds_url", session.pds_url.c_str());
     config_set_str(config, "appview_url", session.appview_url.c_str());
-    config_save(config);
+
+    int result = config_save(config);
+    if (result != 0) {
+        std::fprintf(stderr, "bootstrap: save_session: config_save FAILED for '%s' (result=%d)\n", config_path, result);
+    } else {
+        std::fprintf(stderr, "bootstrap: save_session: config_save succeeded for '%s'\n", config_path);
+    }
     config_free(config);
 }
 
@@ -143,16 +177,22 @@ skeets_bootstrap_result_t make_error_result(const std::string& error_message, bo
 } // namespace
 
 skeets_bootstrap_result_t skeets_run_bootstrap() {
+    std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: starting\n");
+    
     if (skeets_ensure_data_dirs() != 0) {
+        std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: failed to create data dirs\n");
         return make_error_result("Failed to create rewrite data directories", false);
     }
 
+    std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: loading saved session\n");
     Bsky::Session saved_session = load_saved_session();
 
     Bsky::Session restored_session;
     std::string saved_session_error;
     if (has_saved_session(saved_session)) {
+        std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: found saved session, attempting restore\n");
         if (restore_saved_session_with_retry(saved_session, restored_session, saved_session_error)) {
+            std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: session restore succeeded\n");
             save_session(restored_session);
             skeets_bootstrap_result_t result;
             result.state = skeets_bootstrap_state_t::session_restored;
@@ -163,21 +203,31 @@ skeets_bootstrap_result_t skeets_run_bootstrap() {
             result.used_saved_session = true;
             return result;
         }
+        std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: session restore failed: %s\n", saved_session_error.c_str());
+    } else {
+        std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: no saved session found\n");
     }
 
+    std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: checking for login.txt\n");
     bool found_login_file = false;
     const skeets_login_txt_t login = read_login_txt(found_login_file);
     if (!found_login_file) {
+        std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: no login.txt found\n");
         if (has_saved_session(saved_session)) {
+            std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: returning error (had session but restore failed)\n");
             return make_error_result(saved_session_error.empty() ? "Saved session resume failed" : saved_session_error, false);
         }
+        std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: returning waiting for login\n");
         return make_waiting_result();
     }
 
+    std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: login.txt found, handle='%s'\n", login.handle.c_str());
     if (login.handle.empty() || login.password.empty()) {
+        std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: login.txt missing handle or password\n");
         return make_error_result("login.txt is missing required handle or password fields", true);
     }
 
+    std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: attempting createSession\n");
     bool created = false;
     std::string error_message;
     Bsky::Session created_session;
@@ -194,6 +244,7 @@ skeets_bootstrap_result_t skeets_run_bootstrap() {
         return make_error_result(error_message.empty() ? "Login failed" : error_message, true);
     }
 
+    std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: createSession succeeded, saving session\n");
     created_session.appview_url = login.appview_url.empty() ? kDefaultAppView : login.appview_url;
     save_session(created_session);
 
@@ -204,6 +255,7 @@ skeets_bootstrap_result_t skeets_run_bootstrap() {
     result.detail = "Session tokens were saved under the rewrite app root.";
     result.authenticated = true;
     result.consumed_login_file = true;
+    std::fprintf(stderr, "bootstrap: skeets_run_bootstrap: returning success\n");
     return result;
 }
 
diff --git a/src/kobo/diag_main.cpp b/src/kobo/diag_main.cpp
index 8cea924..b76a482 100644
--- a/src/kobo/diag_main.cpp
+++ b/src/kobo/diag_main.cpp
@@ -96,11 +96,30 @@ skeets_input_protocol_t detect_input_protocol() {
 int run_input_diag() {
     std::fprintf(stderr, "rewrite diag: input.begin\n");
 
+    // Query actual framebuffer dimensions instead of hardcoding a single device's resolution.
+    int fb_width = 0;
+    int fb_height = 0;
+    {
+        skeets_framebuffer_t probe_fb;
+        std::string fb_err;
+        if (skeets_framebuffer_open(probe_fb, &fb_err)) {
+            fb_width = probe_fb.info.screen_width;
+            fb_height = probe_fb.info.screen_height;
+            skeets_framebuffer_close(probe_fb);
+            std::fprintf(stderr, "rewrite diag: input.detected_fb=%dx%d\n", fb_width, fb_height);
+        } else {
+            fb_width = 1072;
+            fb_height = 1448;
+            std::fprintf(stderr, "rewrite diag: input.fb_probe_failed=%s (using %dx%d fallback)\n",
+                         fb_err.c_str(), fb_width, fb_height);
+        }
+    }
+
     skeets_input_t input;
     input.debug_raw_events = true;
     input.raw_event_log_budget = 64;
     std::string error_message;
-    if (!skeets_input_open(input, 1072, 1448, detect_input_protocol(), &error_message)) {
+    if (!skeets_input_open(input, fb_width, fb_height, detect_input_protocol(), &error_message)) {
         std::fprintf(stderr, "rewrite diag: input.open_failed=%s\n", error_message.c_str());
         return 5;
     }
diff --git a/src/kobo/main.cpp b/src/kobo/main.cpp
index 6a19313..d4019f2 100644
--- a/src/kobo/main.cpp
+++ b/src/kobo/main.cpp
@@ -1540,6 +1540,7 @@ void save_settings(const skeets_app_t& app) {
 }
 
 void clear_saved_session(skeets_app_t& app) {
+    std::fprintf(stderr, "clear_saved_session: CLEARING session from config\n");
     config_t* config = config_open(skeets_config_path());
     if (config) {
         config_set_str(config, "handle", "");
@@ -1569,15 +1570,33 @@ void clear_saved_session(skeets_app_t& app) {
 }
 
 void persist_session(skeets_app_t& app, const Bsky::Session& session) {
-    config_t* config = config_open(skeets_config_path());
-    if (config) {
+    const char* config_path = skeets_config_path();
+
+    if (session.handle.empty() && session.access_jwt.empty() && session.did.empty()) {
+        std::fprintf(stderr, "persist_session: SKIPPING save — session is empty (would overwrite valid config)\n");
+        return;
+    }
+
+    std::fprintf(stderr, "persist_session: saving handle='%s' did='%s' pds='%s' access_len=%zu refresh_len=%zu\n",
+                 session.handle.c_str(), session.did.c_str(), session.pds_url.c_str(),
+                 session.access_jwt.size(), session.refresh_jwt.size());
+
+    config_t* config = config_open(config_path);
+    if (!config) {
+        std::fprintf(stderr, "persist_session: config_open returned NULL for '%s'\n", config_path);
+    } else {
         config_set_str(config, "handle", session.handle.c_str());
         config_set_str(config, "access_jwt", session.access_jwt.c_str());
         config_set_str(config, "refresh_jwt", session.refresh_jwt.c_str());
         config_set_str(config, "did", session.did.c_str());
         config_set_str(config, "pds_url", session.pds_url.c_str());
         config_set_str(config, "appview_url", session.appview_url.c_str());
-        config_save(config);
+        int result = config_save(config);
+        if (result != 0) {
+            std::fprintf(stderr, "persist_session: config_save FAILED (result=%d)\n", result);
+        } else {
+            std::fprintf(stderr, "persist_session: config_save succeeded\n");
+        }
         config_free(config);
     }
     app.bootstrap.session = session;
diff --git a/src/util/config.cpp b/src/util/config.cpp
index b5cd400..5f3aea6 100644
--- a/src/util/config.cpp
+++ b/src/util/config.cpp
@@ -1,9 +1,11 @@
 #include "config.h"
 #include "str.h"
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <cerrno>
+#include <unistd.h>
 
 #define CONFIG_MAX_ENTRIES 128
 
@@ -28,12 +30,19 @@ static config_entry_t *find_entry(config_t *cfg, const char *key) {
 
 config_t *config_open(const char *path) {
     config_t *cfg = (config_t *)calloc(1, sizeof(config_t));
-    if (!cfg) return NULL;
+    if (!cfg) {
+        std::fprintf(stderr, "config_open: calloc failed for '%s'\n", path ? path : "(null)");
+        return NULL;
+    }
     str_safe_copy(cfg->path, path, sizeof(cfg->path));
 
     FILE *f = fopen(path, "r");
-    if (!f) return cfg; /* new config, no file yet */
+    if (!f) {
+        std::fprintf(stderr, "config_open: file '%s' not found (errno=%d), returning empty config\n", path, errno);
+        return cfg; /* new config, no file yet */
+    }
 
+    std::fprintf(stderr, "config_open: reading '%s'\n", path);
     char line[CONFIG_MAX_KEY + CONFIG_MAX_VALUE + 4];
     while (fgets(line, sizeof(line), f)) {
         str_trim(line);
@@ -49,6 +58,7 @@ config_t *config_open(const char *path) {
         config_set_str(cfg, k, v);
     }
     fclose(f);
+    std::fprintf(stderr, "config_open: loaded %d entries from '%s'\n", cfg->count, path);
     return cfg;
 }
 
@@ -57,13 +67,42 @@ void config_free(config_t *cfg) {
 }
 
 int config_save(config_t *cfg) {
-    if (!cfg) return -1;
+    if (!cfg) {
+        std::fprintf(stderr, "config_save: cfg is NULL\n");
+        return -1;
+    }
     FILE *f = fopen(cfg->path, "w");
-    if (!f) return -1;
+    if (!f) {
+        std::fprintf(stderr, "config_save: failed to open '%s' for writing: %s (errno=%d)\n",
+                     cfg->path, std::strerror(errno), errno);
+        return -1;
+    }
     fprintf(f, "# sKeets config\n");
     for (int i = 0; i < cfg->count; i++)
         fprintf(f, "%s=%s\n", cfg->entries[i].key, cfg->entries[i].value);
-    fclose(f);
+    
+    // Flush to kernel buffers
+    if (fflush(f) != 0) {
+        std::fprintf(stderr, "config_save: fflush failed for '%s': %s (errno=%d)\n",
+                     cfg->path, std::strerror(errno), errno);
+        fclose(f);
+        return -1;
+    }
+    
+    // Sync to persistent storage (critical on embedded devices)
+    int fd = fileno(f);
+    if (fd >= 0 && fsync(fd) != 0) {
+        std::fprintf(stderr, "config_save: fsync failed for '%s': %s (errno=%d)\n",
+                     cfg->path, std::strerror(errno), errno);
+        // Don't fail - data may still reach disk on fclose
+    }
+    
+    if (fclose(f) != 0) {
+        std::fprintf(stderr, "config_save: fclose failed for '%s': %s (errno=%d)\n",
+                     cfg->path, std::strerror(errno), errno);
+        return -1;
+    }
+    std::fprintf(stderr, "config_save: successfully wrote %d entries to '%s'\n", cfg->count, cfg->path);
     return 0;
 }
 
diff --git a/src/util/paths.cpp b/src/util/paths.cpp
index f497366..c43ee59 100644
--- a/src/util/paths.cpp
+++ b/src/util/paths.cpp
@@ -1,5 +1,6 @@
 #include "paths.h"
 
+#include <cstdio>
 #include <cstdlib>
 #include <mutex>
 #include <string>
@@ -84,8 +85,20 @@ const char *skeets_cache_dir() {
 
 int skeets_ensure_data_dirs() {
     const path_state_t &state = paths();
-    if (!mkdirs(state.data_dir)) return -1;
-    if (!mkdirs(state.cache_dir)) return -1;
+    fprintf(stderr, "paths: ensuring data directories exist\n");
+    fprintf(stderr, "paths: data_dir='%s'\n", state.data_dir.c_str());
+    fprintf(stderr, "paths: config_path='%s'\n", state.config_path.c_str());
+    fprintf(stderr, "paths: cache_dir='%s'\n", state.cache_dir.c_str());
+    
+    if (!mkdirs(state.data_dir)) {
+        fprintf(stderr, "paths: FAILED to create data_dir='%s'\n", state.data_dir.c_str());
+        return -1;
+    }
+    if (!mkdirs(state.cache_dir)) {
+        fprintf(stderr, "paths: FAILED to create cache_dir='%s'\n", state.cache_dir.c_str());
+        return -1;
+    }
+    fprintf(stderr, "paths: data directories ready\n");
     return 0;
 }