# S-10 — Context-rot session timeline
# Category: SHOULD (Phase F · Nice-to-have)
# Kapitel: 03 / 04 – U-Kurve · Session/Compact/Handoff
# Anker: Dynamik einer Session von clean → useful → crowded → rot → Exit
# Orientierung: 16:9 landscape
# Didaktik: Ergänzt U-Kurve um zeitliche Rot-Dynamik und Exit-Pfade Compact/Handoff.
# Caption (DE): Session-Timeline: von clean über crowded zu Context-Rot — Compact oder Handoff als Exit.
# Ziel-Asset: assets/illustrations/S-10-context-rot-session-timeline.jpg
# Gate0: Imagine (Timeline gut); SVG falls Phasen-Labels kippen
# Language: English (Gemini / Imagen)
# Usage: paste entire prompt body below into Gemini
# Complements: K-03 (U-curve shape), M-03 (ops controls)

--- PROMPT START ---
Create a horizontal session-dynamics timeline infographic, 16:9 landscape, for a professional practice book on context rot in coding-agent sessions.

OUTPUT SPECS:
- 16:9 landscape; flat-vector timeline; soft depth; print-ready
- Complements a U-curve figure; this figure is about time and symptoms, not the mathematical curve alone

TOPIC:
Sessions rot over time: clean start → useful work → crowding → rot symptoms (DoD lost mid, failed attempts pile) → exit via Compact or Handoff. Unbounded continuation is the failure mode.

TITLE (exact):
Context rot along a session
SUBTITLE (exact):
time fills the window — exits beat hope

COLOR / STYLE:
- Background #F8FAFC; navy #0B1F33
- Early phases: teal #0D9488 / green #16A34A
- Mid crowding: amber #D97706
- Rot phase: risk red #DC2626
- Exit chips: teal/green
- Flat vector; high contrast

TIMELINE phases left → right (5 stations):

1. "Clean start"
   chip: "DoD at edge"
2. "Useful work"
   chip: "high signal"
3. "Crowding"
   chip: "tools pile up"
4. "Rot"
   chips: "DoD lost mid" · "failed tries pile"
5. "Exit"
   split chips: "Compact" · "Handoff"
   note: "new clean window"

Optional thin quality curve under the spine: gentle U or declining signal line — subtle only, not a second competing diagram.

SIDE CALLOUT:
"unbounded loop → faster rot"

TYPOGRAPHY:
- English only; short labels
- No fake token counters with invented absolute numbers

ALLOWED TEXT:
- Title / subtitle
- Clean start · Useful work · Crowding · Rot · Exit
- DoD at edge · high signal · tools pile up · DoD lost mid · failed tries pile · Compact · Handoff · new clean window
- unbounded loop → faster rot

NEGATIVE:
- robots, logos, neon, German paragraphs, vendor cost dashboards, watermarks

FINAL SELF-CHECK:
Five phases in order. Rot shows DoD lost mid. Exit offers Compact and Handoff.
--- PROMPT END ---

# Follow-up edit:
# Keep Compact + Handoff as exits. Preserve DoD lost mid symptom.
# Do not turn this into a duplicate of K-03’s U-curve chart.
