Move Switch OTA launcher sources under ports/switch.

Consolidate the native OTA launcher, bootstrap, and assets into the Switch port tree.

ports/switch/ota-launcher/include/ota_fs.h

@@ -0,0 +1,38 @@
+#ifndef GEN1_OTA_FS_H
+#define GEN1_OTA_FS_H
+
+#include "ota_protocol.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Read installed game version from sibling version.txt or NRO nacp-less stamp file.
+ * Expects switch/gen1recomp/version.txt containing X.Y.Z. Returns 0 on success. */
+int ota_fs_read_installed_version(const char *install_dir, char *out, size_t out_len);
+
+/* SHA-256 hex (lowercase) of file. Returns 0 on success. */
+int ota_fs_sha256_file(const char *path, char *out_hex, size_t out_len);
+
+/* Apply verified temp payload (extracted game NRO) using atomic plan. Returns 0 on success. */
+int ota_fs_atomic_replace_game(const char *install_dir, const char *verified_game_nro,
+                               char *err, size_t err_len);
+
+/* Atomically replace any named NRO under install_dir (copy→.part→rename). */
+int ota_fs_atomic_replace_nro(const char *install_dir, const char *nro_name,
+                              const char *verified_nro, char *err, size_t err_len);
+
+/* Stage a new launcher + copy romfs bootstrap; chainload bootstrap_out next.
+ * The running launcher cannot replace its own NRO on sdmc/FAT. */
+int ota_fs_stage_launcher_bootstrap(const char *install_dir, const char *verified_launcher,
+                                    char *bootstrap_out, size_t bootstrap_out_len, char *err,
+                                    size_t err_len);
+
+/* Hand off to game NRO via envSetNextLoad (Switch) or no-op stub (host). */
+int ota_fs_handoff_to_game(const char *game_nro_path, char *err, size_t err_len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

ports/switch/ota-launcher/include/ota_net.h

@@ -0,0 +1,29 @@
+#ifndef GEN1_OTA_NET_H
+#define GEN1_OTA_NET_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* fraction is 0..1 when Content-Length is known, else -1 for indeterminate. */
+typedef void (*ota_net_progress_fn)(void *userdata, double fraction);
+
+/* Mount romfs (CA bundle) and init libcurl. Call before any HTTPS download. */
+int ota_net_init(void);
+void ota_net_shutdown(void);
+
+/* Download URL into memory buffer (caller frees *out). Returns 0 on success. */
+int ota_net_download_buffer(const char *url, long timeout_ms, char **out, size_t *out_len,
+                            char *err, size_t err_len);
+
+/* Download URL to a filesystem path. progress may be NULL. Returns 0 on success. */
+int ota_net_download_file(const char *url, const char *path, long timeout_ms, char *err,
+                          size_t err_len, ota_net_progress_fn progress, void *progress_ud);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

ports/switch/ota-launcher/include/ota_protocol.h

@@ -0,0 +1,95 @@
+#ifndef GEN1_OTA_PROTOCOL_H
+#define GEN1_OTA_PROTOCOL_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define OTA_CHECK_TIMEOUT_SEC 6
+#define OTA_GAME_NRO_NAME "gen1recomp-game.nro"
+#define OTA_LAUNCHER_NRO_NAME "gen1recomp.nro"
+#define OTA_SAVE_DIR_NAME "pokemon-love2d"
+#define OTA_INSTALL_DIR "switch/gen1recomp"
+#define OTA_LAUNCHER_STAGED_SUFFIX ".staged"
+#define OTA_BOOTSTRAP_ROMFS "romfs:/ota-bootstrap.nro"
+#define OTA_BOOTSTRAP_SD_NAME "ota-bootstrap.nro"
+#define OTA_RELEASES_API \
+  "https://api.github.com/repos/bryanthaboi/gen1recomp/releases/latest"
+
+/* Mirrors src/update/SwitchOta.lua — keep semantics in lockstep. */
+
+int ota_compare_semver(const char *a, const char *b);
+int ota_is_ota_asset_name(const char *name);
+int ota_version_from_ota_asset(const char *name, char *out, size_t out_len);
+
+typedef struct {
+  int ok; /* 1 on success */
+  char reason[64];
+  char tag[64];
+  char version[32];
+  char asset_name[128];
+  char download_url[512];
+} ota_release_t;
+
+int ota_parse_release(const char *json_text, ota_release_t *out);
+
+typedef struct {
+  char status[32]; /* uptodate | available | error */
+  char reason[64];
+  char version[32];
+  char asset_name[128];
+  char download_url[512];
+} ota_decision_t;
+
+void ota_decide_update(const char *installed_version, const ota_release_t *release,
+                       ota_decision_t *out);
+
+/* sums: newline-separated sha256sums.txt body */
+int ota_lookup_sum(const char *sums_text, const char *asset_name, char *out_hex,
+                   size_t out_len);
+
+typedef struct {
+  int ok;
+  char reason[64];
+} ota_verify_t;
+
+void ota_verify_sha256(const char *asset_name, const char *actual_hex,
+                       const char *sums_text, ota_verify_t *out);
+
+typedef struct {
+  char steps[5][520]; /* human-readable ops */
+  char preserve[256];
+  char forbidden_delete[256];
+  char forbidden_direct[256];
+  char part_path[256];
+  char game_nro[240];
+  char launcher_nro[240];
+  char launcher_part[256];
+  char next_load[240];
+} ota_apply_plan_t;
+
+void ota_plan_atomic_apply(const char *install_dir, const char *verified_temp,
+                           ota_apply_plan_t *out);
+
+typedef struct {
+  char action[32]; /* play_installed | keep_checking */
+  char reason[64];
+  char message[128];
+} ota_offline_t;
+
+typedef struct {
+  int user_skip;
+  int network_ok; /* 0 = offline/fail, 1 = ok, -1 = unknown */
+  int api_error;
+} ota_offline_events_t;
+
+void ota_offline_policy(double elapsed_sec, const ota_offline_events_t *events,
+                        ota_offline_t *out);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GEN1_OTA_PROTOCOL_H */

ports/switch/ota-launcher/include/ota_ui.h

@@ -0,0 +1,37 @@
+#ifndef GEN1_OTA_UI_H
+#define GEN1_OTA_UI_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Framebuffer UI matching the in-game launcher look (black + RGB rail +
+ * flat semantic buttons). Silent by default — only call when user-facing. */
+
+/* Returns 1 = update, 0 = skip / play installed. */
+int ota_ui_prompt_update(const char *installed, const char *latest);
+
+/* Status screen (download / install). Redraws each call. */
+void ota_ui_show_status(const char *title, const char *detail);
+
+/* Progress 0..1; detail optional. */
+void ota_ui_show_progress(const char *title, const char *detail, float progress01);
+
+/* Error / info + wait for B. */
+void ota_ui_alert(const char *title, const char *line1, const char *line2);
+
+/* User-friendly error with optional technical detail and installed-version footer. */
+void ota_ui_alert_error(const char *title, const char *friendly, const char *technical,
+                        const char *installed_version);
+
+/* Missing game install screen; wait for +. */
+void ota_ui_missing_game(void);
+
+/* Tear down framebuffer if active. Safe to call when UI never opened. */
+void ota_ui_shutdown(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

ports/switch/ota-launcher/include/ota_unzip.h

@@ -0,0 +1,20 @@
+#ifndef GEN1_OTA_UNZIP_H
+#define GEN1_OTA_UNZIP_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Extract member_name from zip_path into dest_path.
+ * Tries exact member_name, then common prefixes (switch/gen1recomp/).
+ * Returns 0 on success. */
+int ota_unzip_extract_file(const char *zip_path, const char *member_name, const char *dest_path,
+                           char *err, size_t err_len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif