ห ญgjmใ๓,—dZddlmZddlmZmZdd„Zy)uวW19B-3 / W20B mutual exclusion guard helper. background_render w18j_overlap (W19B-3) ์™€ shot_aware_bg_render_plan (W20B) ๋Š” ๋™์ผ reference-graph SOT ๋ฅผ ๋‹ค๋ฅด๊ฒŒ ์‚ฐ์ถœํ•  ์ˆ˜ ์žˆ์–ด ๋‘˜ ๋‹ค ๋™์‹œ์— ํ™œ์„ฑํ™”๋˜๋ฉด silent divergence โ€” ์–ด๋Š path ์˜ ๊ฒฐ๊ณผ๊ฐ€ downstream consumer ์— ๋ฐ˜์˜๋ ์ง€ ์šด์˜์ž๊ฐ€ ์•Œ์•„์ฑ„์ง€ ๋ชปํ•œ๋‹ค. fail-closed ๋กœ ์ฐจ๋‹จ. contract: conflict := ( settings.background_render_reference_mode == "w18j_overlap" and bool(settings.shot_aware_bg_render_plan_enabled) ) caller side (background_render_step._execute / shot_aware_bg_render_plan_step._execute) ๋Š” ์ •์ƒ applicability gate ํ†ต๊ณผ ํ›„ โ€‘ ์™ธ๋ถ€ ํ˜ธ์ถœ / DB / ImageAsset write ์ „ โ€‘ ์— ``detect_w19b3_w20b_conflict()`` ๋ฅผ ํ˜ธ์ถœ, ๋ฐ˜ํ™˜๊ฐ’์ด None ์ด ์•„๋‹ˆ๋ฉด step result ๋ฅผ ``failed_count=1 + diagnostic`` ํ˜•ํƒœ๋กœ emit (not_applicable ์•„๋‹˜ โ€” operator ๊ฐ€ ๋‘ selector ๊ฐ€ ๋™์‹œ์— ์ผœ์ง„ ์ƒํƒœ๋ฅผ ์ฆ‰์‹œ ๊ฐ์ง€ํ•˜๋„๋ก). ้)ฺ annotations)ฺAnyฺOptionalc๓T—t|ddซdk(rtt|ddซซr yy)u W19B-3 / W20B ๊ฐ€ ๋™์‹œ์— ํ™œ์„ฑํ™”๋ผ ์žˆ์œผ๋ฉด diagnostic ๋ฌธ์ž์—ด, ์•„๋‹ˆ๋ฉด None. ํ•œ์ชฝ๋งŒ ํ™œ์„ฑ์ด๊ฑฐ๋‚˜ ๋‘˜ ๋‹ค default off ์ผ ๋•Œ๋Š” None. caller ๊ฐ€ ์ด ๊ฒฐ๊ณผ๋ฅผ ๊ทธ๋Œ€๋กœ step result error / diagnostic field ์— ์‹ค์–ด fail-closed ์ฒ˜๋ฆฌ. ฺ background_render_reference_modeฺlegacyฺ w18j_overlapฺ!shot_aware_bg_render_plan_enabledFzืW19B-3/W20B selector conflict: background_render_reference_mode='w18j_overlap' AND shot_aware_bg_render_plan_enabled=True are mutually exclusive. exactly one of the two reference-graph paths may be opt-in at a time.N)ฺgetattrฺbool)ฺsettingss ๚U/Users/manta/Documents/Projects/TheRoad-I1/backend/app/core/steps/_selector_guards.pyฺdetect_w19b3_w20b_conflictrs;€๔ ะ<ธhำGุ ๒ ไ ”˜ะ#FศำNิ O๐ T๐ ๐ ๓N)r rฺreturnz Optional[str])ฺ__doc__ฺ __future__rฺtypingrrrฉrrฺrs๐๑๕&#็ ๔r