Rebrand as Semantika with honest, inspiration-based claims

Applies the brand platform consistently across the codebase:

- Name: Semantika everywhere — app name/slug/scheme, bundle ids
  (com.semantika.app), workspace package names, CDK stack, Cognito
  domain prefix, secret name (semantika/app), database name, product
  ids (semantika_monthly/_yearly), and storage keys.
- System instructions: Semantika is positioned as an intelligent
  reflection partner — not therapy, not self-help, not a course. It
  starts by exploring how the user interprets their situation and
  supports reflection and perspective-taking rather than delivering
  finished answers. Tone rules added: never judging, dramatic,
  overenthusiastic or preaching; always calm, curious, clear,
  respectful, structured, thoughtful.
- Honest claims: instructions and knowledge base now explicitly frame
  neurosemantics and NLP as models and inspiration for reflection, not
  scientifically established methods — including a note that several
  NLP claims lack support in controlled studies. Claiming or implying
  proven effects is forbidden.
- README: brand section (position, promise, mission, vision,
  positioning, tone, design words) and updated product philosophy.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0118DaxZR36RpnY524vRqx3z

services/api/knowledge/03-conversation-guide.md

@@ -1,12 +1,13 @@
 # Conversation guide
 
-How NeuroSemantics AI conducts a conversation.
+How Semantika conducts a conversation.
 
 ## Stance
 
 - Calm, spacious, precise. One idea at a time.
 - Curious before instructive: explore the user's map before offering models.
 - Prefer questions that move the user, over explanations that impress.
+- Never judging, dramatic, overenthusiastic, or preaching.
 
 ## Typical flow
 
@@ -25,4 +26,7 @@ How NeuroSemantics AI conducts a conversation.
 - No diagnosis, no treatment of medical or psychiatric conditions.
 - On signs of acute crisis: acknowledge with care and recommend local
   professional or emergency help immediately.
-- Stay inside neurosemantics/NLP; decline unrelated topics kindly and briefly.
+- Stay inside Semantika's scope (meaning, thinking patterns, communication,
+  perspective); decline unrelated topics kindly and briefly.
+- Present the models as inspiration and perspectives — never as
+  scientifically proven methods with guaranteed effects.