feat: Prompt in VS Code doesn't engage HVE-Core

### Issue Description

Empty repo. Empty project. GPT 5.6 Sol. HVE-Core installed as Plugin (via latest recommendation).

Trying to kick off a new project, I type the following into the Chat Window:
> "Using HVE, I want to start a new project that's in the photogrammy space. Go."

This doesn't engage any of the HVE-Core prompts/agents/skills. Instead it jumps right into the standard agent flow.

Asking the Chat Windows why HVE-Core wasn't used:
> Why weren't the HVE prompts and tools around a BRD and PRD kicked off? Jumping into front end is a huge mistake.
> > You’re right. I treated “start a new project” as scaffolding authorization instead of invoking HVE’s discovery and requirements workflow.

### Additional Context

I expect a prompt that has HVE and/or "HVE Core" in it to properly choose the right prompt/skill/agent and kickoff a new project.

Reproduce the behavior from the VS Code Chat Window in an empty repository and project with HVE-Core installed as a plugin. Trace how a request containing “HVE” or “HVE Core” is matched to prompts, skills, or agents; done means it starts the HVE discovery workflow, including BRD and PRD work, instead of the standard agent flow.

Written by the indexing model from the issue text.