Add tone-style A/B experiment to Typist workflow

[Copilot]

The Typist workflow now supports an A/B experiment on prompt tone to compare the current formal style against a more conversational variant while preserving the existing analysis structure. This wires the experiment into both workflow metadata and prompt rendering so runs can be attributed and compared.

• Experiment metadata

  • Added a rich experiments.tone_style config to typist.md
  • Captures hypothesis, primary/secondary metrics, guardrails, sample size, weights, start date, tags, and notification target
  • Keeps the experiment self-describing in frontmatter and compiled workflow output

• Prompt tone variants

  • Wrapped the mission in explicit variant conditionals
  • Added a tone-specific Phase 0 introduction
  • Split the executive summary instructions into formal vs conversational guidance
  • Swapped the recommendations section header/intro based on the selected variant

• Compiled workflow update

  • Regenerated typist.lock.yml so experiment metadata and conditional prompt rendering are reflected in the compiled workflow

{{#if experiments.tone_style == 'formal'}}
Analyze all Go source files in the repository to identify:
1. **Duplicated type definitions**
2. **Untyped usages**
{{/if}}
{{#if experiments.tone_style == 'conversational'}}
Let's hunt for type consistency issues in the Go codebase!
{{/if}}

[Copilot]

Pull request overview

Adds an A/B experiment to the Typist workflow to compare a formal vs conversational prompt tone, and wires the selected variant into compiled workflow metadata and prompt rendering so runs can be attributed and analyzed.

Changes:

• Introduces experiments.tone_style frontmatter in typist.md and adds tone-dependent prompt sections via {{#if experiments.tone_style == ...}} blocks.
• Updates the compiled typist.lock.yml to restore/pick/persist experiment state, export the selected variant, and include experiment assignments in workflow outputs.
• Regenerates additional compiled workflow artifacts (smoke-temporary-id.lock.yml, ai-moderator.lock.yml).

Show a summary per file

File	Description
.github/workflows/typist.md	Declares the tone_style experiment and conditionally swaps tone-specific prompt sections.
.github/workflows/typist.lock.yml	Compiled workflow updated to select, propagate, and persist experiment assignments and render the prompt accordingly.
.github/workflows/smoke-temporary-id.lock.yml	Regenerated compiled workflow output (non-Typist changes).
.github/workflows/ai-moderator.lock.yml	Regenerated compiled workflow output; updates skip-bots env list.

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• Files reviewed: 4/4 changed files
• Comments generated: 2