Add Technical_Decomp_Manifest

Technical_Decomp_Manifest.md

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+## enroll/manifest.py
+
+### _IndentDumper (inner class inside _yaml_dump_mapping)
+
+#### Purpose: makes PyYAML output indentation match stricter linters/Ansible expectations.
+
+#### What it subclasses:
+
+yaml.SafeDumper
+
+#### Override:
+
+- increase_indent(self, flow=False, indentless=False)
+- it forces indentless=False when calling the superclass, which prevents PyYAML’s common behavior of emitting:
+```
+key:
+- item
+```    
+ - and instead prefers:
+
+```
+key:
+  - item
+```
+
+#### Lifecycle / where it’s used:
+
+Only used when PyYAML is available.
+
+manifest uses _yaml_dump_mapping() for:
+- role defaults (defaults/main.yml)
+- host_vars role data (inventory/host_vars/...)
+- ensuring stable formatting.