Add pico-gdb-memory.gdb, update BN guides Weeks 4-11, and regenerate PDFs to fix SWD DPIDR reconnects

debug-server.ps1

@@ -81,6 +81,13 @@
       broken debugger or a broken firmware. It is neither: it is a configuration
       mismatch, and hiding core1 removes it completely.
 
+      Note on Core 0 register previews (pico-gdb-memory.gdb):
+      Even with USE_CORE=0, whenever a Core 0 register holds an arbitrary integer
+      or unmapped value (e.g. 0x69000000), Binary Ninja's UI probes that address
+      for memory previews. In OpenOCD, failed SWD reads trigger the same SWD DPIDR
+      reconnect behavior. Source "pico-gdb-memory.gdb" in Binary Ninja's Debugger
+      Console to restrict GDB to valid Flash and SRAM, filtering invalid reads locally.
+
     Why reset run (the target must be released, not halted)
       On RP2350, halting during reset stops the core at the boot ROM stub BEFORE
       the stack pointer is loaded: