Convert prototype HUD and chat surfaces to production UGUI/TMP panels

[JOY]

Source

• docs/design/30-alpha-ux-flow.md
• docs/design/69-alpha-quest-tracker-and-objective-flow-design.md
• docs/design/89-alpha-control-camera-and-combat-input-baseline.md
• docs/design/102-alpha-body-death-and-failed-attempt-flow.md
• docs/design/107-alpha-route-interaction-prompt-and-copy-matrix.md
• docs/design/113-alpha-in-world-signage-and-prop-label-copy-pack.md
• docs/playtests/_templates/ugui-tmp-hud-chat/README.md

Summary

Replace the current prototype IMGUI/debug-style HUD and chat surfaces with stable UGUI/TMP panels suitable for Play Mode smoke and early playtest.

Scope

• Convert current body status, quest tracker, nearby chat, and focused dialogue surfaces to UGUI/TMP.
• Keep debug-only fields behind a debug toggle.
• Ensure text scales cleanly at common Game view resolutions.
• Prevent NPC nameplates and debug surfaces from overlapping the dialogue panel.
• Define clear HUD region ownership or intentional collapse rules for current body HUD, quest tracker, focused chat, debug surface, outcome, inventory, and death/reinhabitation panels.
• Define modal priority and close/back behavior for dialogue, inventory, mission board, outcome report, death/reinhabitation, debug overlay, and pause/settings.
• Use approved route prompt labels, button copy, lock reasons, no-respawn/no-client-reward copy, and in-world marker/signage labels.

Acceptance Criteria

• Current body status and chat panels are UGUI/TMP, not IMGUI prototype UI.
• Dialogue mode has stable layout at 1080p, 1440p, and a common laptop aspect ratio.
• Quest tracker remains top-right and does not appear inside the chat panel.
• HUD, focused chat, quest tracker, debug surface, outcome, inventory, and death/reinhabitation panels have clear region ownership or intentional collapse rules.
• Modal stack evidence covers dialogue, inventory, mission board, outcome report, death/reinhabitation, debug overlay, and pause/settings.
• Debug labels can be hidden without hiding player-facing chat.
• Route interaction prompts follow docs/design/107-alpha-route-interaction-prompt-and-copy-matrix.md or document approved deviations.
• In-world marker and warning copy follows docs/design/113-alpha-in-world-signage-and-prop-label-copy-pack.md where this UI lane displays those labels.
• Unity Play Mode smoke verifies typing, Enter send, Esc exit, and no movement, attack, interact, skill, camera, inventory, map, mission, menu, debug, or hotkey leaks while typing.

References

• docs/design/30-alpha-ux-flow.md
• docs/design/69-alpha-quest-tracker-and-objective-flow-design.md
• docs/design/89-alpha-control-camera-and-combat-input-baseline.md
• docs/design/102-alpha-body-death-and-failed-attempt-flow.md
• docs/design/107-alpha-route-interaction-prompt-and-copy-matrix.md
• docs/design/113-alpha-in-world-signage-and-prop-label-copy-pack.md
• docs/playtests/_templates/ugui-tmp-hud-chat/hud-region-overlap-note.md
• docs/playtests/_templates/ugui-tmp-hud-chat/modal-stack-note.md

Cut Line

Do not close #141 if only debug IMGUI surfaces satisfy the evidence, if the layout only passes one resolution, if modal conflicts are untested, or if chat typing still leaks movement, attack, interact, skill, camera, inventory, map, mission, menu, debug, or hotkey actions.

[JOY]

Implementation packet added in PR #188: docs/design/45-alpha-backlog-execution-packets.md.

Use that packet as the build contract for this issue: goal, minimum data contract, Unity/backend surface, verification, and cut line. This comment does not close the issue; implementation still needs its own PR and runtime evidence where applicable.

[JOY]

Added the #141 production player UI implementation handoff plus evidence template.

Docs:

• docs/design/132-alpha-ugui-tmp-player-ui-builder-brief.md
• docs/playtests/_templates/alpha-ugui-tmp-player-ui/README.md

The brief locks first-pass scope for replacing player-facing IMGUI/debug surfaces with UGUI/TMP or equivalent production UI: main HUD body/TIME readability, focused dialogue layout, quest tracker separation, debug toggle, route prompt copy, typing/input lock, no-respawn copy, multi-resolution screenshots, and presentation-only authority boundaries.

Verification run locally:

• tools/windows/check-backlog-sync.ps1: OK
• git diff --check -- docs ROADMAP.md: OK
• generated dash-character scan on touched Convert prototype HUD and chat surfaces to production UGUI/TMP panels #141 docs/tracking files: OK
• local markdown link check: OK

[JOY]

Docs/tracking update from local design lane:

• Added missing source doc referenced by the issue: docs/design/69-alpha-quest-tracker-and-objective-flow-design.md
• Added evidence template: docs/playtests/_templates/ugui-tmp-hud-chat/README.md
• Linked Convert prototype HUD and chat surfaces to production UGUI/TMP panels #141 from docs/playtests/README.md, docs/setup/play-mode-smoke-checklist.md, docs/setup/alpha-open-issue-handoff-coverage.md, docs/setup/alpha-playable-loop-handoff-coverage.md, docs/setup/github-project-tracking.md, docs/design/47-alpha-execution-tracker.md, docs/design/03-systems-index.md, and docs/SUMMARY.md
• Template now requires UGUI/TMP panel scope, 1080p/1440p/laptop layout checks, chat input lock, quest tracker placement, prompt copy checks, debug boundary, and layout/performance notes.

Verification run locally:

• tools/windows/check-backlog-sync.ps1: OK, 75 issue refs resolved
• git diff --check: OK
• local markdown links for touched docs: OK
• em/en dash scan for touched docs: OK

No code, Unity scene, prefab, package, or ProjectSettings changes were made.