Part of kcenon/common_system#454

What

Add asio version 1.30.2 to the vcpkg.json overrides array. pacs_system depends on network_system which requires asio >= 1.30.2, but pacs_system does not pin asio in its own overrides.

• Current: overrides contains sqlite3, openssl, libjpeg-turbo, libpng, openjpeg, charls, openjph, crow, gtest, benchmark — no asio
• Expected: overrides also includes { "name": "asio", "version": "1.30.2" }
• Scope: vcpkg.json overrides section only

Why

• pacs_system requires network_system as a core dependency (PACS_WITH_NETWORK_SYSTEM=ON by default)
• network_system and database_system both pin asio to 1.30.2 in their overrides
• Without the override, pacs_system's build may resolve a different asio version
• Ecosystem standard defined in DEPENDENCY_MATRIX.md: asio 1.30.2

Where

• vcpkg.json overrides array (currently 10 entries, add 1 more)

How

Technical Approach

Add one entry to the overrides array:

{ "name": "asio", "version": "1.30.2" }

Acceptance Criteria

• asio override at version 1.30.2 is present in vcpkg.json
• Existing overrides are unchanged
• Build resolves asio consistently with network_system and database_system