Fix heap fragmentation issues

- Keep-if-fits font buffer reuse (SdCardFont), the page-turn fragmentation fix
- Background-build heap floors + buildTickHeapGate() (the ParsedText::addWord abort fix), with the BLE-shed branch removed
- KOSync TLS gate split (free ≥ 50K, largest block ≥ 20K)
- wolfSSL SP ECC flags + FP_MAX_BITS 8192 in the patch script
- custom_sdkconfig: timer-stack trims (~7KB) and, per your answer, the WiFi IRAM opts (~25-30KB); plus the cloud-component removal the hybrid build requires. All verified present in the generated sdkconfig after the build.
- Web server watchdog registration fix (this branch's handlers already call esp_task_wdt_reset without it)

.gitignore

@@ -23,3 +23,9 @@ lib/EpdFont/scripts/output/
 # (worktrees, scheduled-task locks, settings.local, scout CLEANUP.md) out.
 .claude/*
 !.claude/skills/
+/managed_components
+/.dummy
+CMakeLists.txt
+dependencies.lock
+sdkconfig.default
+sdkconfig.defaults