Prefer symbol datasheet, hydrate symbols with mpn + mfr data (#581)

* Prefer symbol datasheet, fallback to API scan

* Patch symbol MPN/MFR metadata on add-component

Author: akhilles

CHANGELOG.md

@@ -12,6 +12,8 @@ and this project adheres to Semantic Versioning (https://semver.org/spec/v2.0.0.
 
 - Use zstd level 17 (was 15) when embedding STEP 3D models into KiCad footprints.
 - `Path(..., allow_not_exist=True)` no longer emits missing-path warnings.
+- `pcb search` component add now prefers symbol datasheets, using fallback URL scan only when needed.
+- `pcb search` add-component now rewrites symbol `Manufacturer_Part_Number`/`Manufacturer_Name` metadata before generating `.zen`.
 
 ### Fixed
 

crates/pcb-component-gen/src/lib.rs

@@ -169,7 +169,6 @@ pub fn generate_component_zen(args: GenerateComponentZenArgs<'_>) -> Result<Stri
             "pin_defs": pin_defs_vec,
             "pin_groups": pin_groups_vec,
             "pin_mappings": pin_mappings,
-            "description": args.symbol.description,
             "datasheet_file": args.datasheet_filename,
             "generated_by": args.generated_by,
             "include_skip_bom": args.include_skip_bom,

crates/pcb-component-gen/templates/component.zen.jinja

@@ -1,9 +1,5 @@
 """
 {{ component_name }}
-{%- if description %}
-
-{{ description }}
-{%- endif %}
 
 Auto-generated using `{{ generated_by }}`.
 """
@@ -34,9 +30,6 @@ Component(
 {%- if include_skip_pos %}
     skip_pos = skip_pos,
 {%- endif %}
-{%- if description %}
-    description = "{{ description }}",
-{%- endif %}
 {%- if datasheet_file %}
     datasheet = File("{{ datasheet_file }}"),
 {%- endif %}