初始提交：terminalX 可运行态（M0/M1/M1.5 已真机验证）

- M0: libghostty SSH 终端（渲染/输入/连接）+ 白屏修复(OutputGate) + 会话状态机/自动重连
- M1: tsnet 用户态组网 + SSH-over-tsnet(fd 桥)，shell 级真机验证；R5(Go+gvisor+C+++Swift 同进程) retire
- M1.5: tmux -CC 原生 tab（MVP）
- 结构: packages/(TXCore·TXTransport), apps/TerminalX, vendor/(libghostty-spm/libssh2/mbedtls/tsnet-bridge), artifacts/
- 文档: CLAUDE.md + docs/HANDOFF.md（新会话入口）
- 环境: 认证代理→依赖 vendor 本地化；Go 在 ~/.local/go；仅模拟器/未签名
- 待续: M2 mosh, tmux 多 pane, M4 安全(host key/SE)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

vendor/mbedtls/configs/config-tfm.h

@@ -0,0 +1,68 @@
+/**
+ * \file config-tfm.h
+ *
+ * \brief TF-M medium profile, adapted to work on other platforms.
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+/* TF-M medium profile: mbedtls legacy configuration */
+#include "../configs/ext/tfm_mbedcrypto_config_profile_medium.h"
+
+/* TF-M medium profile: PSA crypto configuration */
+#define MBEDTLS_PSA_CRYPTO_CONFIG_FILE "../configs/ext/crypto_config_profile_medium.h"
+
+/***********************************************************/
+/* Tweak the configuration to remove dependencies on TF-M. */
+/***********************************************************/
+
+/* MBEDTLS_PSA_CRYPTO_SPM needs third-party files, so disable it. */
+#undef MBEDTLS_PSA_CRYPTO_SPM
+
+/* Disable buffer-based memory allocator. This isn't strictly required,
+ * but using the native allocator is faster and works better with
+ * memory management analysis frameworks such as ASan. */
+#undef MBEDTLS_MEMORY_BUFFER_ALLOC_C
+
+// This macro is enabled in TFM Medium but is disabled here because it is
+// incompatible with baremetal builds in Mbed TLS.
+#undef MBEDTLS_PSA_CRYPTO_STORAGE_C
+
+// This macro is enabled in TFM Medium but is disabled here because it is
+// incompatible with baremetal builds in Mbed TLS.
+#undef MBEDTLS_ENTROPY_NV_SEED
+
+// These platform-related TF-M settings are not useful here.
+#undef MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
+#undef MBEDTLS_PLATFORM_STD_MEM_HDR
+#undef MBEDTLS_PLATFORM_SNPRINTF_MACRO
+#undef MBEDTLS_PLATFORM_PRINTF_ALT
+#undef MBEDTLS_PLATFORM_STD_EXIT_SUCCESS
+#undef MBEDTLS_PLATFORM_STD_EXIT_FAILURE
+
+/*
+ * In order to get an example config that works cleanly out-of-the-box
+ * for both baremetal and non-baremetal builds, we detect baremetal builds
+ * (either IAR, Arm compiler or __ARM_EABI__ defined), and adjust some
+ * variables accordingly.
+ */
+#if defined(__IAR_SYSTEMS_ICC__) || defined(__ARMCC_VERSION) || defined(__ARM_EABI__)
+#define MBEDTLS_NO_PLATFORM_ENTROPY
+#else
+/* Use built-in platform entropy functions (TF-M provides its own). */
+#undef MBEDTLS_NO_PLATFORM_ENTROPY
+#endif
+
+/***********************************************************************
+ * Local changes to crypto config below this delimiter
+ **********************************************************************/
+
+// We expect TF-M to pick this up soon
+#define MBEDTLS_BLOCK_CIPHER_NO_DECRYPT
+
+/* CCM is the only cipher/AEAD enabled in TF-M configuration files, but it
+ * does not need CIPHER_C to be enabled, so we can disable it in order
+ * to reduce code size further. */
+#undef MBEDTLS_CIPHER_C