openup: doc restructure - template alignment + design sequences (non-PSP)

Align the OpenUP markdown set to the blank templates (process-data repo,
templates/openup/) per BUILD-CHECKLIST 7. Scenario step text unchanged;
the EA model needs no change (brief descriptions already live in the
model's UC/actor notes).

- vision.md: positioning tables, stakeholder summary, user environment,
  needs-and-features table (R1/R2), other product requirements
- use-case-model.md: per-UC specification sections (brief description,
  actor descriptions, named alternative/exception subsections with
  numbered steps, post-conditions, special requirements)
- supplementary-specifications.md: category tables with priority and
  use-case columns + reverse coverage matrix; IDs unchanged
- test/quality-check-procedure.md: migrated from Joplin (single content
  home); stale open items marked resolved (WI-1/WI-2)
- analysis-design/sequences/: 12 PlantUML design sequences (lifelines =
  analysis classes, messages = design elements; per the PlantUML layout
  style guide) + PNG renders; embedded in Architecture Notebook 9.3
- Joplin consolidated: project content notes deleted (all live in
  docs/game + docs/openup); Joplin keeps the status note only

docs/openup/analysis-design/sequences/uc-08-run-adventure.puml

@@ -0,0 +1,52 @@
+@startuml uc-08-run-adventure
+autonumber
+title UC-08 Run Adventure (design sequence)
+actor Player
+participant "AdventureBoundary\n«/api/characters/{id}/adventure»" as boundary <<boundary>>
+participant "AdventureService\nsb-core::adventure::run_adventure" as control <<control>>
+participant "ResourceRegenerator\napply_regen" as regen <<entity>>
+participant "CombatEngine\nsb-core::combat" as combat <<entity>>
+participant "Combatant\nCombatStats" as combatant <<entity>>
+participant "SpellEffect / BardSong\nsb-core::{spells,songs}" as fx <<entity>>
+
+== Validate ==
+Player -> boundary : POST adventure (zone, default skara_brae_streets)
+boundary -> control : run_adventure(rng, character, zone)
+alt zone unknown
+  control --> boundary : 404
+else HP <= 0
+  control --> boundary : 400
+else nerve < zone cost
+  control --> boundary : 422
+else ok
+end
+control -> regen : apply_regen(character)
+regen --> control : character (regenerated)
+control -> control : nerve -= zone cost
+
+== Encounter ==
+control -> combatant : pick_enemy(rng, weighted table)
+alt unknown enemy id (data error)
+  control --> boundary : 500 DomainError::UnknownEncounterEnemy
+end
+
+== Combat (rounds) ==
+loop until one side falls
+  control -> combat : open_ended_roll(rng, attack)
+  combat -> combat : OB vs DB, crit table\n(level-gap damage caps)
+  combat -> fx : bard song effect, active spell dmg/heal
+  combat --> control : round result
+end
+
+== Resolve ==
+alt player victory
+  control -> combatant : XP + gold per enemy def
+  control -> combatant : HP = last defender HP
+  control -> combatant : loot rolls (catalogue items only)
+else defeat
+  control -> combatant : HP = 0, no rewards
+end
+control -> fx : spell-point upkeep (win or lose)
+control --> boundary : {zone, enemy, combat_log, loot}
+boundary --> Player : {zone, enemy, combat_log, loot}
+@enduml