Module variables 

Template variable substitution for dynamic task fields.

Responsibilities:

• Define supported template variables ({{target}}, {{module}}, {{file}}, {{branch}}).
• Substitute variables in template strings with context-aware values.
• Auto-detect context from git and filesystem.
• Validate templates and report warnings for unknown variables.

Not handled here:

• Template loading (see loader.rs).
• Template merging (see merge.rs).

Invariants/assumptions:

• Variable syntax is {{variable_name}}.
• Unknown variables are left as-is by default (not an error).
• Use strict mode to fail on unknown variables.

Structs

TemplateContext

Context for template variable substitution

TemplateValidation

Result of template validation

Enums

TemplateWarning

Warning types for template validation

Functions

detect_context

Detect context from target path and git repository (legacy, ignores warnings)

detect_context_with_warnings

Detect context from target path and git repository

substitute_variables

Substitute variables in a template string

substitute_variables_in_task

Substitute variables in all string fields of a Task

validate_task_template

Validate a template task and collect warnings