feat: agent-native refactor, SVD consistency fixes, UX cleanup, mobile support

- Refactor agent_tools to atomic primitives (24 tools, delete workflows)
- Fix SVD component score inconsistency between single-window and trajectory views
  (same PCA basis, same flip handling, same active-MP filter for current_parliament)
- Fix Dutch spelling: Huidig parliament -> Huidig parlement
- Remove all decorative emojis from UI (app.py, explorer.py, analysis tabs)
- Add dark theme matching sgeboers.nl (mint accent on dark background)
- Remove browser tab favicon and Streamlit chrome (deploy button, running status)
- Remove trajectories debug UI and EMA settings (hardcoded smooth_alpha=0.35)
- Switch layout to centered for mobile readability
- Add responsive CSS for mobile (touch targets, font sizing, overflow prevention)
- Update AGENTS.md and SYSTEM_PROMPT.md with active tool instructions
- Add compound docs for SVD consistency bug
- Update tests: 214 passed, 3 skipped

.streamlit/config.toml

@@ -0,0 +1,9 @@
+[theme]
+primaryColor = "#00d9a3"
+backgroundColor = "#0d1117"
+secondaryBackgroundColor = "#161b22"
+textColor = "#e6edf3"
+font = "sans serif"
+
+[ui]
+showDeployButton = false