Extract Stack Usage from Map File

Parse a linker map file and report the top stack consumers, so a stack overflow can be predicted before it happens on the bench.

Constraints

• Stack usage lines look like 'function_name 128 static'.
• Report the top 10 by size, largest first.
• Skip entries marked 'dynamic' - they cannot be bounded statically.
• Print name and size, tab separated.
• Exit 1 if the map file is missing.
• Use only awk, sort and standard utilities.