Condense template AI instructions and bump version to 1.0.96

[noelsaw1]

Motivation

• Reduce the size of the template-completion guidance to improve context window efficiency for AI agents while preserving the core workflow and troubleshooting guidance.
• Keep dist/TEMPLATES/_AI_INSTRUCTIONS.md focused on the minimal, actionable steps AI agents need to complete and run templates.
• Synchronize the tooling metadata by bumping the script version to reflect the documentation update.

Description

• Condensed dist/TEMPLATES/_AI_INSTRUCTIONS.md into a concise minimal workflow that covers reading the template, extracting metadata, populating PROJECT_NAME/PROJECT_PATH/NAME/VERSION, fallback behavior, and quick troubleshooting tips.
• Updated the single-source version in dist/bin/check-performance.sh from 1.0.95 to 1.0.96 and adjusted the file header comment accordingly.
• Added a new 1.0.96 entry to CHANGELOG.md describing the instruction condensation and version bump.
• Preserved the previous guidance semantics (no functional changes to scanning logic or run scripts).

Testing

• No automated tests were run because this is a documentation-only change and does not modify runtime behavior.
• Existing automated tests and fixture suites were not modified by this PR and remain applicable for future verification.

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Codex Task