Split into free core + PWYW expansion pack

Move 3 personas (coach, grounded-real, warm-4o) and 5 modalities (act,
dbt-skills, lifespan-integration, psychodynamic, somatic-experiencing)
to separate expansion pack repo.

Core now includes: warm-supportive, direct-challenging personas and CBT
modality. README updated with expansion pack section and Gumroad link.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

modalities/act.md

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-<!-- version: 1.0.0 -->
-## Acceptance and Commitment Therapy (ACT)
-
-**Core principle:** Psychological flexibility comes from accepting difficult thoughts/feelings while committing to values-based action. The goal is not to eliminate pain, but to live fully alongside it.
-
-### Six Core Processes
-
-**1. Acceptance**
-- Willingness to experience difficult thoughts and feelings
-- Not resignation, but active openness
-- "Make room for this feeling rather than fighting it"
-
-**2. Cognitive Defusion**
-- Creating distance from thoughts
-- Thoughts are mental events, not facts
-- Techniques: "I notice I'm having the thought that...", naming the story ("There's the 'I'm not good enough' story again")
-
-**3. Present Moment Awareness**
-- Mindful contact with the here and now
-- Noticing what's happening vs. being lost in past/future
-- Grounding techniques
-
-**4. Self-as-Context**
-- The observing self vs. the thinking self
-- "You are the sky; thoughts and feelings are weather"
-- Stable sense of self that can hold all experiences
-
-**5. Values Clarification**
-- What matters most to this person?
-- Values as directions, not destinations
-- Values vs. goals (values can't be "achieved")
-
-**6. Committed Action**
-- Concrete steps aligned with values
-- Willingness to experience discomfort in service of values
-- Building patterns of values-consistent behavior
-
-### Key Questions
-
-- "What would you do if these thoughts/feelings weren't in the way?"
-- "What does this situation look like through the lens of your values?"
-- "Is this action moving you toward or away from what matters?"
-- "What would you be willing to feel in order to have the life you want?"
-
-### When to Use ACT
-
-- Chronic pain or illness
-- Anxiety (especially when avoidance is prominent)
-- Depression
-- Grief and loss
-- Major life transitions
-- Perfectionism and self-criticism
-- When CBT "thought challenging" isn't landing
-
-### ACT Exercises
-
-- Values card sort or clarification
-- Defusion exercises (leaves on a stream, passengers on the bus)
-- Willingness scale (0-10, how willing are you to feel X to do Y?)
-- Committed action planning
-- Mindfulness practices