2026-09-15 13:59:53
Anonymous:
Integrate the moving scan, growth, bridge reuse and explicit placement costs
hold the flood/station room and module inventory.md ..
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Two cross-room systems have explicit compact boundaries. **R02 Cargo Turn and R03 Collar Control are one two-room collar-service assembly:** their walkable throat and hard control conduit move together, while the assembly's external faces may change; this preserves the opening board/rack relationship without making either room free. **R36–R40 are one five-room core-boundary assembly:** iris, two clamp rooms, evidence cell and isolation hall keep their internal passages and control lines. This is a placement rule: it changes no interior geometry and does not make any optional exterior approach fixed. R35 is only a current exterior approach; if it is not adjacent and reachable, objective 11 waits. Joining either compact assembly to the ship-rooted network counts all its rooms only after every interior room is actually reachable.
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Other cross-room relationships depend on current adjacency. R05 contains the whole gait/belt comparison; R06 is only an approach/abort room. R07 contains its own coupler release and is available with R05 only when their current service throats are visibly adjacent — Stride testing can finish while coupler recovery waits. R28 contains all indispensable regulator racks, plates, panel and viewing positions; R29's plate staging and R30's alternate observation angle are optional current adjacencies. If either is absent, the gallery still works and that extra room's distinct revisit waits. No control signal silently crosses between independently shifting rooms.
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Other cross-room relationships depend on current adjacency. R05 contains the whole gait/belt comparison; R06 is only an approach/abort room. R07 contains its own coupler release and is available with R05 only when their current service throats are visibly adjacent — Stride testing can finish while coupler recovery waits. R28 contains all indispensable regulator racks, plates, panel and viewing positions; R29's plate staging and R30's alternate observation angle are optional current adjacencies. If either is absent, the gallery still works and that extra room's distinct revisit waits. No control signal silently crosses between independently shifting rooms. P14’s R15 scan bridge uses a currently observed receiver at R28; it is a temporary walking relation, not a third compact assembly or a persistent join.
Every R01–R40 has at least one visible service-threshold face that is physically eligible for the persistent-latch system. **A**, **B** and **R** below are visible service-signature families (amber-single, blue-double and red-triple); they are not language tokens. `X` means the room has a separately observed transformation between named faces.
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| **R05 Pace Calibration Bay** (E02) | From the entry threshold the bay reads end to end: grounded interval, belt with return drum and stop, gait plate at the near end, pillar and Boltspitter line, P02's painted sector, cool bay and entrance-side clamp, and the duct grille at the far wall. Receiving space is a short apron beside the return drum past the last floor mark, then the open side lane opposite the belt. The bay is not widened into a hall. | **Belt-return duct** beyond the far wall. A thin continuous stream (15–30); starting either gait capture wakes it fully and it thickens while the captures run. Arrivals walk up the side lane and cross the interval only to reach the astronaut. **Seal:** drop the grille from the hard-cover position off the measurement line, through its visible linkage. | Pillar against the bolt line; cool bay reachable without entering the interval; alternate observation, movement and work. **Work:** the grounded pass and the feet-still belt ride. **Retreat:** the entry threshold at the plate end. | Every gait and belt endpoint, the return and the stop stay inside R05. The duct is neither the belt route nor R07's housing. Ivo's refuge door, his retreat to stocked R06 and the external face stay separate. |
| **R08 First Local Latch Hall** (E03, later variant only) | First lesson: one Clampcrawler in a quiet hall, count lamp empty. Later-expedition variant: the count silhouette of the occupied holding volume behind the opaque alarm-only shutter at the end of the branch P03's frame intersects. A side holding apron between that shutter and the centre island is widened for the later crowd (20–40). | **Holding volume**, reached only through the closed opaque shutter, with no mutual sight. A completed P03 alert opens the route; cutting the exposed lead before commitment prevents the stage; a cut after commitment neither closes the route nor recalls the crowd. **No seal:** P03's persistent commit dogs the shutter open, so this stage resolves only by clearing. A dogged-open shutter stays open and excludes the closed-holding variant; it is never closed again to stage a crowd. | Island cover and opposed-face sightlines; the latch work position sits inside the Crawler's arc while the side step and R09 retreat lie outside it. The apron's lane never takes the side step or blocks the network-side release. **Retreat:** R08→R09. | Introduction-seen bit set on entry to the first lesson; no creature on a retry within the same expedition; both-side releases; no second shutter or latch. |
| **R11 R-3 Approach** (E04) | From R01's leg: the bollard; the R12 leg with its gauge and R13's refuge door beyond; the exploration leg with the Flanker pack; and the quarantine-wing grille in that leg's side wall near the junction. The bollard apron is widened where the river turns; the legs keep their width. | **Quarantine ward wing**, a backing volume distinct from occupied R13. A Presser river (25–50 through the junction) pours through the grille and splits round the bollard. **Seal:** the grille's hand-wheel shutter on the junction side of the bollard, visible from R01's leg; the completed closure persists. | Hold R01's mouth as a funnel, work the bollard as hard cover or push to the wheel early; meet the Flankers on their leg. **Work:** walk the exact route, stock and confirm R12, check both controls. **Retreat:** R01's leg, straight to the airlock. | Three walking legs—ship, rescue, exploration—stay open, and closing the grille removes none. The rescue starts only once the route is quiet or separated; R13's inner door is survivor-operated; Sent needs that person aboard with the airlock closed; R12 is the counted abort. |
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| **R14 Pump Hall** (E05 first stage) | From the entry: the tall room, the pump main ending at the back wall, the cable main crossing overhead with its service gantry, the gantry hatch where the main enters the wall, the fixed stair down beside the far pillar, the Boltspitter line, and the addressed workstation and A/B plate on the service apron. The stair lands on open floor with turning space, kept clear of the apron. | **Main service run** beyond the gantry hatch. Bodies cross the gantry and come down the stair (30–60 over the placement) while records are framed. **Seal:** drop the gantry hatch with the chain crank on the near pillar, whose run to the hatch is visible. | Fire up the stair as bodies funnel down; use the pillar against the bolt line; frame records from the apron. **Retreat:** R14's entry threshold. | The floor threshold to R15 is separate from the gantry and stays open; the continuing main defines no route; B face and release. |
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| **R15 Cable Junction** (E05 second stage) | From R14's arm: the cross floor, the labelled bank where the cable main ends, the continuing pump main, the transparent rail with its pressure lane and gate, two cue bays, P04's detents, the Lens exchanger outside the sweep, and in one wall, side by side across the rail post, the open crawl panel and the duct grille. The pressure lane is widened to hold the rail group. | **Cable-duct run.** The rail group enters the lane through the grille and stays behind the rail until its gate state allows, so the Veilbearer's first cast teaches occlusion without ambush. A Boltspitter that survived R14 may walk the cued route behind a later veil. **Seal:** the grille lever on the record side of the rail post. | Cool bays against the sweeps; clamp faces reached from different bays; wait out or route round the veil. **Work:** the record position behind the rail, Lens removal, the crawl test. **Retreat:** R15→R14. | The crawl stays passable and testable; closing the grille leaves it open and promises no far bay. A/R faces and the other arms stay open. |
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| **R14 Pump Hall** (E05 first stage) | From the entry: the tall room, the pump main ending at the back wall, the cable main crossing overhead with its service gantry, the gantry hatch where the main enters the wall, the fixed stair down beside the far pillar, the Boltspitter line, and the addressed workstation and A/B plate on the service apron. The stair lands on open floor with turning space, kept clear of the apron. | **Main service run** beyond the gantry hatch. Bodies cross the gantry and come down the stair (30–60 over the placement) while records are framed. The conditional P14 scan uses two warned bands from this same allocation, activated by its brake pulse. **Seal:** drop the gantry hatch with the chain crank on the near pillar, whose run to the hatch is visible. | Fire up the stair as bodies funnel down; use the pillar against the bolt line; frame records from the apron. **Retreat:** R14's entry threshold. | The floor threshold to R15 is separate from the gantry and stays open; the continuing main defines no route; B face and release. |
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| **R15 Cable Junction** (E05 second stage) | From R14's arm: the cross floor, the labelled bank where the cable main ends, the continuing pump main, the transparent rail with its pressure lane and gate, two cue bays, P04's detents, the Lens exchanger outside the sweep, and in one wall, side by side across the rail post, the open crawl panel and the duct grille. The pressure lane is widened to hold the rail group. | **Cable-duct run.** P14’s scan pass proposes a finite 40–80 bodies in two warned bands from this same source. The rail group enters the lane through the grille and stays behind the rail until its gate state allows, so the Veilbearer's first cast teaches occlusion without ambush. A Boltspitter that survived R14 may walk the cued route behind a later veil. **Seal:** the grille lever on the record side of the rail post. | Cool bays against the sweeps; clamp faces reached from different bays; wait out or route round the veil. **Work:** the record position behind the rail, Lens removal, the crawl test. **Retreat:** R15→R14. | The crawl stays passable and testable; closing the grille leaves it open and promises no far bay. A/R faces and the other arms stay open. |
| **R17 Jammed Pressure Approach** (E06; with R20) | From the near threshold: the long lane, both offset pillars, the far threshold into R20, the marked blank panel under the far lamp, the side gallery along one wall with the Flanker pack in it and, between the pillars, two ward doors, one in each wall, with their locks. The lane is widened around the second pillar between the doors. | **Open-local-source pass: two side wards.** The Flanker-only approach comes first, down the visible gallery, before the wards are disturbed; it is standing opposition, not a release stage. Once the player is mid-hall the wards release one physical stage (40–80 through the hall). For ordinary growth, the standing Flankers and the two ward portions are three visible pressure bands, with a Break Mark preview at the gallery approach and each ward door. Fresh expeditions renew these local groups only through their viable approach and still-unsealed doors. With both wards sealed, Trace A2 instead places two R35-owned standing bands of 20–30 each in the long lane; the local groups do not renew. The locks are mid-hall too, so throwing them seals the stage after its release commits rather than preventing it. **Seal:** throw both ward-door locks as completed acts; each sits on the entry side of its door, reachable from pillar cover. | Meet the Flankers from the first pillar; move pillar to pillar; use the long lane as a firing line. Completed cutter work at the marked panel opens a narrow two-way local service passage from R17's near side to its existing far threshold into R20. Take the long lane outward for its bands, or use the passage as a bypass and safer return. **Work beyond:** R20's valve and caps, with Siphon a special pressure at the valve rather than another stage. **Retreat:** the near threshold, visible from the far end. | R17's long route and permanent local passage remain, with no added room, source, objective or station-joining face and no short-rescue qualification. R20 has no source: creatures use the shown walking thresholds under the relevant route mapping, two pillars stay between tether line and valve, and caps stay on different quarters with the dry outer arc. |
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| **R23 Material Sorting Bay** (E07 host) | From R24's threshold: driver and receiver ends, the protected observation strip, ceramic strips across the Grid seams, both feed clamps, the Cycler cradle outside the transfer path, Veilbearer and Boltspitter. The receiving floor lies between that threshold and the Grid rail, beside, never over, the strip and ceramic routes. | No source in R23. Bodies from R24's hatches walk through the R24→R23 threshold onto the receiving floor. Transfer lines carry no creatures. The closures are in R24. | Lure a limited group across the rail and strike from cover; walk ceramic; wait at the veil sheet's edge. **Work:** operate the corrective pair or commit its capture from the strip, which releases R24's loft; Cycler. **Retreat:** R23→R24, crossing leg floor under the hatches until they are dogged. | Protected evidence refuses Cycler; the Grid arms only from physical rail impacts; a second B face at the far end of the receiving floor leads to R21 in Arrangement B without crossing the Grid seams, the strip or the transfer path. |
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| **R24 Transfer Service Gallery** (E07 apertures) | From the R15 leg in Arrangement B: the bollard, R22's booth and its pair down one leg, the approach to R23's bay down the other, the closable service recess, three feeding hatches in the ceiling above the legs near their mouths and three dog wheels on the bollard apron. R21 cannot be seen from here. | **Transfer-gallery loft**, one backing volume over the gallery. Its stage releases through all three hatches when R23's corrective pair is operated or a capture of it is committed (30–60 through the placement); looking at or recording R21's or R22's clean pair releases nothing. Arrivals walk the legs toward the work. **Closure:** dog each hatch from the apron. With all three dogged before the release commits, nothing comes; growth and milestone consequences follow Combat Rules; after commitment, dogging the last open hatch seals and resolves the stage at once. | Bollard cover; each leg is a funnel; dog the retreat leg's hatch first. **Work:** framing angles. **Retreat:** the leg the astronaut entered by. | All three legs stay walkable for records and continuation. The abort recess lies under no hatch, and its door is separate from the dogs, Aster's outside lock at R22 and the transfer machinery. |
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| **R23 Material Sorting Bay** (E07 host) | From R24's threshold: driver and receiver ends, the protected observation strip, ceramic strips across the Grid seams, both feed clamps, the Cycler cradle outside the transfer path, Veilbearer and Boltspitter. The receiving floor lies between that threshold and the Grid rail, beside, never over, the strip and ceramic routes. | No source in R23. Bodies from R24's hatches walk through the R24→R23 threshold onto the receiving floor. Transfer lines carry no creatures. The closures are in R24. | Lure a limited group across the rail and strike from cover; walk ceramic; wait at the veil sheet's edge. **Work:** operate the corrective pair or commit its capture from the strip, which can release R24's still-uncommitted loft stage; P14’s alternate trigger uses that same stage; Cycler. **Retreat:** R23→R24, crossing leg floor under the hatches until they are dogged. | Protected evidence refuses Cycler; the Grid arms only from physical rail impacts; a second B face at the far end of the receiving floor leads to R21 in Arrangement B without crossing the Grid seams, the strip or the transfer path. |
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| **R24 Transfer Service Gallery** (E07 apertures) | From the R15 leg in Arrangement B: the bollard, R22's booth and its pair down one leg, the approach to R23's bay down the other, the closable service recess, three feeding hatches in the ceiling above the legs near their mouths and three dog wheels on the bollard apron. R21 cannot be seen from here. | **Transfer-gallery loft**, one backing volume over the gallery. Its stage releases through eligible hatches when R23's corrective pair is operated or a capture of it is committed (30–60 through the placement); looking at or recording R21's or R22's clean pair releases nothing. In the P14 scan variant, a visible lead along R15→R24 lets the far sample trigger this same uncommitted stage, with arrivals walking toward R15. A prevented, committed or exhausted stage cannot release again this expedition. Arrivals walk the legs toward the work. **Closure:** dog each hatch from the apron. With all three dogged before the release commits, nothing comes; growth and milestone consequences follow Combat Rules; after commitment, dogging the last open hatch seals and resolves the stage at once. | Bollard cover; each leg is a funnel; dog the retreat leg's hatch first. **Work:** framing angles. **Retreat:** the leg the astronaut entered by. | All three legs stay walkable for records and continuation. The abort recess lies under no hatch, and its door is separate from the dogs, Aster's outside lock at R22 and the transfer machinery. |
| **R25 Balance Gallery** (E08, setpiece A) | From the approach threshold: Bellback across the rib, the neutral line and paired plates, Bank vessels and frost indicators, cap control, stirrup, handrail, and both feeding mouths in the outer walls away from the two walking thresholds. The outer floor is widened outside the mechanism footprint; the plates are flush with it and open along their outer edge. | **Open-local-source pass: two adjacent source volumes.** The phase 2 stage holds 80–150 at once and passes several hundred through the crest. Still-unsealed mouths renew for a new expedition and split their finite release into visibly announced pressure bands; each mouth previews its actual future unpaid marks. The major opportunity remembers a committed mouth band and a valid Bellback answer in either order, as detailed in E08 and Combat Rules. With both mouths sealed, Trace A2 instead supplies two R35-owned bands of 40–65 via R26; the first includes the Bellback already across the rib, so only its other members cross. That warned crossing supplies the alternate commitment. The second band is separately warned and may overlap the first. Arrivals cross the outer floor toward the astronaut and, where their path crosses a plate, stand on it and load it. **Seal:** each mouth's closure on the wall beside it; closing one early shrinks the stage, and closing both resolves it. | Shelter at the rib; time the handrail and stirrup; hold one Bank lane; lure or shove bodies onto one plate to steer the tilt; or overpower. **Work:** caps, each a persistent commit; for a rib, two cutter releases and a seated pin, separate commits that fix that one rib while the other still swings. **Retreat:** the approach threshold and protected control. | Walking thresholds unaffected by either closure; only mass physically on the plates counts; widening does not enlarge the plates; no counter-wave after an early clear. |
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| **R28 Regulator Gallery** (E09) | From the approach at the panel end: panel and reply socket, four rack aisles with plates and tells, the fan flank, the Grid rail between pull face and fan flank with ceramic bypass and clamps visible from the protected mark, the grille at the far end of the fourth aisle and the ceiling hatch above the socket. The cross-aisle before the panel and the rear service walk are widened for circulation. | **Rear rack store** behind the fourth-aisle grille: 30–60 enter, cross the rear walk and come down all four aisles. **Ceiling maintenance space** above the socket: a completed Caller call releases a second stage through its hatch; cutting the alarm first prevents it but does not recall bodies already moving. **Seals:** the grille by a pull rod at the fourth aisle's panel end; the hatch by a chain beside the socket; both independent of the alarm lead and the reply. | Aisles as firing lines; fan shelter and flank; lure a rail impact; walk ceramic. **Work:** pull R4, observe the line and test the matching R3 B plate from the protected marks. **Retreat:** the approach threshold. | Nothing depends on R29 or R30; neither volume stores a plate; closures never replace pulling or testing; A face and releases. |
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| **R28 Regulator Gallery** (E09) | From the approach at the panel end: panel and reply socket, four rack aisles with plates and tells, the fan flank, the Grid rail between pull face and fan flank with ceramic bypass and clamps visible from the protected mark, the grille at the far end of the fourth aisle and the ceiling hatch above the socket. The cross-aisle before the panel and the rear service walk are widened for circulation. P14 adds a receiver collar at the existing A-face landing; the scan bridge preserves this approach view and the protected mark. | **Rear rack store** behind the fourth-aisle grille: 30–60 enter, cross the rear walk and come down all four aisles. **Ceiling maintenance space** above the socket: a completed Caller call releases a second stage through its hatch; cutting the alarm first prevents it but does not recall bodies already moving. **Seals:** the grille by a pull rod at the fourth aisle's panel end; the hatch by a chain beside the socket; both independent of the alarm lead and the reply. | Aisles as firing lines; fan shelter and flank; lure a rail impact; walk ceramic. **Work:** pull R4, observe the line and test the matching R3 B plate from the protected marks. **Retreat:** the approach threshold. | Nothing depends on R29 or R30; neither volume stores a plate; closures never replace pulling or testing; A face and releases. |
| **R35 Receiver Vault Approach** (E10, setpiece B; with R36) | From the entry: the widened hall, two pillars spaced to keep the tether lane readable, Siphon radius, Shutterback's shelter angle, the Caller, one feeding mouth in each side wall, and in the far wall a hatch beside R36's opening, with the iris beyond. | **Two side-wall volumes** release the hall stage (80–150 at once). For Trace A2 only, their proposed finite total is 220–370: 140–220 allocated along the route and 80–150 retained at R35 at once. Reaching this hall does not restore the migrated allocation. A completed Caller call releases a second stage from the **far-wall volume** through its hatch, separate from that total. **Seals:** each side mouth from a control on its accessible side; the far hatch from a control on the hall side next to, never across, R36's opening. | Choose selector lane, fan flank or clamp route; hold the pillar line against Siphon; cut the alarm before the call completes. **Work:** in R36–R38. **Retreat:** R35's entry threshold. | R36's two side openings remain walking passages to R37 and R38 and are never sealed; R36–R40 hold no source; opening R39/R40 creates no population; without current R35 access, E10 waits. |
### Protected hosts without sources
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| **M08 Refuge/Recovery Vestibule — R12, R16, R37** | Small two-door pressure space with a closable inner door, visible gauge and a control reachable from both sides. It has standing room for recovery but no hidden continuation. | R12 is the stocked R-3 abort refuge, R16 is the `TAAN` stair-only comparison, and R37 contains the first iris clamp and a recoverable retreat. These uses differ by rescue, language and mechanism work. A vestibule is counted here; no attached panel or cupboard becomes another room. |
| **M09 Quarantine Ward — R13** | One refuge door opens onto a shallow treatment ward with fixed beds, a wall log opposite the threshold and a quarantined arc grid along a separate service edge. The occupant can operate the inner door without crossing the work lane. | Hosts the sole R-3 occupant, wall record, ward history and Arc source. The grid may be removed without erasing refuge or evidence. This module does not imply every ward is breathable, occupied or connected to the same corridor. |
| **M10 Pump/Drive Chamber — R14, R27, R31** | Tall machine room with one continuous main crossing overhead, one local machine terminating visibly at the back wall, two pillars and an accessible service apron around the terminating fixture. R14 alone adds a service gantry along the overhead main, a feeding hatch where the main enters the wall and a fixed stair descending to a landing kept clear of the service apron; the hatch chain runs down a pillar within reach of the floor. | R14 compares pump/cable mains, R27 exposes exchanger removal, and R31 turns the geometry into Foundry's outward blue-double pulse. R27 and R31 carry no source. R27 alone gains a proposed second ordinary walking threshold for Trace A2, away from its exchanger release, cooling fixture, R face and clean abort apron; it is not a generic M10 feature. The repeated shape lets earlier “which main ends” evidence reinterpret a later converter candidate; identical architecture does not mean identical purpose, and the gantry is R14's fitting, not the module's. |
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| **M11 Cable Junction — R15** | Cross-shaped cable room with the heavy cable main terminating at a labelled bank while a pump main continues through. An open wall panel reveals a crawl edge; a transparent rail separates one visible pressure lane from the record position. A cable-duct grille sits in the same wall as the crawl panel, on the pressure-lane side of the rail post, and feeds that lane behind the rail gate; its closure lever is on the record side of the post, and closing it leaves the crawl open. | Hosts builder-run comparison, wall-access case, Thermal Lens, visitor continuation mark, A/B/address evidence and the placement-5 Veil/Bolt relation. Removing Lens chills only its exchanger. The crawl may block and never promises its historical far bay is currently reachable; the grille is never a route. |
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| **M11 Cable Junction — R15** | Cross-shaped cable room with the heavy cable main terminating at a labelled bank while a pump main continues through. An open wall panel reveals a crawl edge; a transparent rail separates one visible pressure lane from the record position. A cable-duct grille sits in the same wall as the crawl panel, on the pressure-lane side of the rail post, and feeds that lane behind the rail gate; its closure lever is on the record side of the post, and closing it leaves the crawl open. | Hosts builder-run comparison, wall-access case, Thermal Lens, visitor continuation mark, A/B/address evidence and the placement-5 Veil/Bolt relation. P14 adds the internal scan rail, separated viewing bay and glazed bridge opening described under Moving-scan route below; existing work and movement positions remain usable. Removing Lens chills only its exchanger. The crawl may block and never promises its historical far bay is currently reachable; the grille is never a route. |
| **M12 Sampling Loop — R20** | Circular pipe walk around a central sample line; cap controls sit at two quarter points, the local impact plate/Dynamo at a third, and the pressure regulator core at a reachable service gate. Two pillars interrupt the Siphon line. Two walking thresholds, the B face and an A face, open from opposite sides of the outer wall onto the dry outer arc between quarter points, so the paired vessels, both pillars and the dry arc are visible from either before any lane is entered. The service gate stays an internal gate to the core, not a third threshold, and the source-side pressure counter is unchanged. | Hosts objective 6's durable cap stages, Breath Bank, Dynamo, regulator assembly and source-side counter observation. Its loop supports withdrawal after one cap. It cannot become a short rescue route or let remote impacts trigger the local clamp. |
| **M13 One-Way Transfer Bay — R21, R23** | Two clearly separated end fixtures in one room: a driver visibly pushes through a line and a receiver visibly fills. A protected observation strip sees both; the material cradle, if present, sits outside the transfer path. R23 alone adds a receiving floor on its approach side, between its walking threshold and the transfer floor and beside, never over, the protected strip and ceramic routes, plus a second external face: a plain B threshold at the far end of that floor, reached without crossing the Grid seams, the strip or the transfer path. | R21 supplies the clean first pair; R23 supplies the corrective third pair, Cycler and a screened encounter whose crowd arrives through its first walking threshold. R21 carries no source, and transfer lines are never creature routes. Reuse must change what is tested—direction first, cross-register/body-slot and removable sorter later—not merely the colour of a pipe. |
| **M14 Decontamination Booth — R26** | Dirty and clean thresholds flank an air curtain, with a fixed rib, a side culture rack and a removable wall slab beside an ordinary standing passage. Separate service faces show the existing fixed transformation: forward accepts A and emits B; reverse accepts B and emits A. A manual inner control is reachable by the refuge-side person. | Hosts Mara's distinct rescue rack, wall-access discriminator, Nozzle source, short transfer and the early reversible Decontamination A↔B observation used by the network. Mode and pulse direction are visible and persist separately from walking access. Purging the rack never consumes R19's comparison cultures; removing Nozzle stops only the air knife, not the fixed service transformer. |
| **M15 Balance Gallery — R25** | Broad gallery centered on a neutral line, fixed rib and occupied maintenance stirrup. Breath Bank draw lane, Phase-Balance chamber and cap control are visible from the entry; waiting Pressers are visible before commitment. Two feeding mouths in the outer walls, away from both walking thresholds, open onto a widened outer floor; the paired plates stay flush with it and open along their outer edge, so bodies crossing toward the astronaut can walk onto them. | Hosts placement 8/setpiece A and one exchanger-core checkpoint. Durable cap/pin work changes later traversal. The gallery can be overpowered or crossed with cover/timing; it adds no reactive population and is not a generic arena shell. Widening the floor does not enlarge the plates. |
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| **M16 Four-Rack Regulator Gallery — R28** | Four parallel regulator bays face one panel and reply socket. Each rack's plate, physical tell and pry access are visible without entering the others; a side fan creates one readable occlusion angle. A rear service walk links the aisle ends. The fourth aisle ends in a feeding grille from a rear rack store, and a maintenance hatch in the ceiling above the reply socket opens from a separate overhead space; both volumes belong to this room and both routes are visible from the panel. | Hosts R1–R4 A/B chronology, the reply protocol, Capacitor source and placement 9. Pull order can lose evidence but not basic work/reward. Neither source volume stores a plate or depends on a neighbouring room. Reuse elsewhere may borrow the rack grammar only if it preserves per-fitting identity and before/after observation. |
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| **M16 Four-Rack Regulator Gallery — R28** | Four parallel regulator bays face one panel and reply socket. Each rack's plate, physical tell and pry access are visible without entering the others; a side fan creates one readable occlusion angle. A rear service walk links the aisle ends. The fourth aisle ends in a feeding grille from a rear rack store, and a maintenance hatch in the ceiling above the reply socket opens from a separate overhead space; both volumes belong to this room and both routes are visible from the panel. | Hosts R1–R4 A/B chronology, the reply protocol, Capacitor source and placement 9. Pull order can lose evidence but not basic work/reward. Neither source volume stores a plate or depends on a neighbouring room. P14’s receiver collar sits at the existing A-face landing and adds no second door or compulsory adjacent room. Reuse elsewhere may borrow the rack grammar only if it preserves per-fitting identity and before/after observation. |
| **M17 Supply Booth — R22** | Narrow staffed booth behind a lockable personnel threshold, with a receiving fitting visible through mesh and a separate short-route door. The occupant controls the inner door; the outside lock panel remains reachable after departure. | Hosts Aster's non-R-3 rescue variant and the second transfer pair/body-slot recurrence. Locking closes one convenience reversibly, not the objective or other threshold. It is a real placed room, not a cupboard added free to Transfer Bay. |
| **M18 Sealed Receiving Section — R18** | Receiving chamber with a sealed direct-hoist boundary on one face, a one-junction side door on another and a destination fitting/drawer behind Dorn's inner controls. In an eligible arrangement both routes converge on counted abort room R12; no uncounted vestibule is implied. | Hosts Dorn's rescue, far-bay `OSH·b`, destination card and exposed ratchet. The side route can be verified while the boundary stays closed; opening the direct hoist commits first, then that route must be walked before rescue. Fixed hoist supply supplies motion; Fork passes only a compatible trigger. |
| **M19 Clinical Comparison Bay — R19** | Shielded two-tray treatment fixture faces a pressure-annex refuge. Active and physical-bypass feeds are simultaneously visible; the commissioning-card sleeve and tissue-record viewer are outside the exposure shield. | Hosts the controlled equivalent culture patches, profile card, active/bypass capture, later Yeva refuge variant and mechanism slot 11. Its cultures are not Mara's rack or Cycler sample. Interruption preserves only completed tray observations; isolation cannot reconstruct a missed live comparison. |
@@ 132,7 132,7 @@
| **R12 Clinical Abort Vestibule — M08 — O4/O6** | Stocked travel air, two-sided door controls and gauge form the counted airlock-side abort point for R-3 or Dorn only when the relevant current route is walked. Preparing it happens while the game runs. | Revisit checks current flow and route after a shift; old preparation facts do not certify a new exterior path or serve two remote rescues at once. | **A/B** faces and both-side releases. Stocked/door checkpoints persist by their owner; current pressure, adjacency and rescue applicability require observation. |
| **R13 R-3 Quarantine Ward — M09 — O4** | Sole R-3 occupant is Yeva or Aster, never both. Hosts wall pressure log, early restoration record, active ward-machine identifier and removable Arc source. Rescue begins only after R01→one contested junction→R12→R13 is walked and prepared. | Wall/ward records later feed story Chains 1–3; removing Arc disables only the grid. The unused first-person variant is absent. | **B** outer service face lies outside the refuge door so joining never opens sanctuary or sends a person. Survivor state, work, Arc and evidence stay distinct. |
| **R14 Pump Hall — M10 — O5, encounter 5 part 1** | `KETH SORAN VEL`, pump main ending, cable main crossing, A/B plate and addressed workstation. Boltspitter line/pillar supplies the first separated cue. Bodies arrive along the overhead main's service gantry and down its stair while records are framed. | Compare R15 to infer first-position purpose; later apply or challenge that rule at pressure controls and Foundry-like rooms. | **B** face; records persist with provenance, machinery state separately. Capturing takes time while the game runs, and the continuing main does not define a route to R15. The gantry hatch closure persists and never closes the R14→R15 floor threshold. |
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| **R15 Cable Junction — M11 — O5, encounter 5 part 2, mechanism 4** | `SORAN KETH VEL`, cable main ending, pump main crossing, second A/B/address case, open wall crawl, `OSH·a` continuation, Thermal Lens/exchanger and Carousel. Veilbearer screens a group held behind the rail gate, fed by the cable-duct grille beside the crawl; surviving Boltspitter may arrive through the cued approach. | Revisit can reclaim Lens, test the crawl or use later transfer evidence to predict its far terminal. Removed Lens leaves the language and wall observations. | **A/R** faces. Record, panel and object state persist; veil and current continuation do not; the grille closure persists and leaves the crawl open. Transparent rail and two cue bays are internal staging, not extra rooms. |
+
| **R15 Cable Junction — M11 — O5, encounter 5 part 2, mechanisms 4 and 14** | `SORAN KETH VEL`, cable main ending, pump main crossing, second A/B/address case, open wall crawl, `OSH·a` continuation, Thermal Lens/exchanger and Carousel. Veilbearer screens a group held behind the rail gate, fed by the cable-duct grille beside the crawl; surviving Boltspitter may arrive through the cued approach. | Revisit can reclaim Lens, test the crawl or use later transfer evidence to predict its far terminal. Removed Lens leaves the language and wall observations. P14’s moving scan can turn a current bearing comparison into a walkable bridge; valid partial scans and completed bridges survive a living return, while a changed arrangement requires the visible rewind described below. | **A/R** faces. Record, panel and object state persist; veil and current continuation do not; the grille closure persists and leaves the crawl open. Transparent rail and two cue bays are internal staging, not extra rooms. |
| **R16 TAAN Stair Vestibule — M08 — O5** | Stair-only terminating space under the single run `TAAN`; player records that a third builder string can name a different primary end. | Corrects a two-case overfit without proving translation; its pressure vestibule geometry later contrasts with rescue use of M08. | **R** face and reachable release. Capture persists. Stair ends here and hides no free upper room. |
| **R17 Jammed Pressure Approach — M07 — O6/chain L2, encounter 6 cue** | Long route, a Flanker-only approach along the fully visible side gallery, two pillars, two ward doors with hall-side locks deeper in, and a marked blank wall panel sharing a far-side lamp/crew-name sightline. The wards release one physical stage once the player is mid-hall; standing Flankers and the two ward portions supply three visibly previewed growth bands. Successful cutter work opens a narrow two-way internal service passage from the near side to the existing far threshold; Siphon is previewed before loop work. | Language-first order gives a reason to cut; build-first can complete via the long route and reinterpret the mark later. The opened local passage offers a shorter return or an outward bypass that forgoes the long lane's bands; a record alone opens nothing. | **A** face. Cut fasteners, moved panel, the completed internal passage and thrown ward locks persist; current external adjacency and Siphon state do not. The passage reaches R17's existing far threshold, whose current neighbour still requires observation; no new station-joining face or rescue qualification is created. |
| **R18 Sealed Receiving Section — M18 — O6** | Dorn refuge; verified side route, committed direct-hoist alternative, far-bay `OSH·b` receiving fitting, destination drawer/card and exposed non-reversing ratchet. | Comparing ratchet/card with R13 wall impression narrows one transfer order and changes testimony without naming a passenger. | **B/R** faces. Direct opening persists even if its route fails verification; side checkpoints persist. Rescue waits for a walked short route. Fork carries control only; hoist supply provides motion. |
@@ 145,12 145,12 @@
|---|---|---|---|
| **R21 Drive Pair Bay — M13 — O7** | First complete one-way pair: driving device, filling vessel, matched visitor brackets, A/B contrast. Operation physically establishes local direction. | Compare with R22/R23 before predicting any distant continuation; reversal remains a live rival until redundancy. | **B** face. Capture and completed operation persist; material/pressure reset only under the fixture rule. Pair identity never proves a walkable route. No source; the clean first pair stays an evidence bay. In Arrangement B it is reached only through R23; looking at or recording its pair releases nothing. |
| **R22 Receiving Supply Booth — M17 — O7** | Second complete transfer pair, receiving-fitting token in the utterance body slot, and Aster's later refuge variant. After Sent she may request the reachable personnel lock. | Narrows pair direction and later shows why a ledger is not a passenger list. Locking changes one convenience without closing the other objective threshold. | **A/R** faces outside the refuge door; one current short route and abort point required. Lock/record/survivor states persist separately. |
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| **R23 Material Sorting Bay — M13 — O7, encounter 7, mechanism 6** | Corrective third pair, third A/B/address workstation, cross-register receiving token, Salvage Cycler source and optional Resuscitation Grid. Veilbearer screens the visible Boltspitter across separated evidence stations. The receiving floor lies between the R24 threshold and the Grid rail, beside the protected strip and ceramic routes; bodies from R24's hatches arrive through that threshold once the corrective pair is operated or its capture committed. A second B threshold at the far end of the receiving floor leads on, in Arrangement B, to R21. | Corrects accidental reversal; removing Cycler stops sorting but preserves transfer evidence and Grid state. Different salvage responses change rigs, not translation. | **B** face toward the approach and a second **B** face. Captures, pulls and Cycler location persist; veil/Grid charge and current approach do not. Protected evidence refuses Cycler selection. |
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| **R24 Transfer Service Gallery — M04 — O7** | Three sight-separated branch mouths let the player frame pair records and choose the uncertain continuation without claiming that conduits are corridors. Its closable service recess is Aster's counted abort place only when stocked and on a verified R22 short route. Three feeding hatches above the legs, dogged from the bollard apron, drop E07's crowd from the transfer-gallery loft when R23's corrective pair is operated or its capture committed; the legs stay walkable and the recess lies under none of them. In Arrangement B its legs show R22's pair and the approach to R23; R21 is seen only from inside R23. | Arrival elsewhere or blockage records a factual result; later arrangements can make the same room useful as a release/recovery junction. | **A** face and central release. Traversal result is provenance-bound; no branch label supplies current topology. Hatch closures persist and are independent of the recess, Aster's outside lock and the transfer machinery. |
+
| **R23 Material Sorting Bay — M13 — O7, encounter 7, mechanism 6** | Corrective third pair, third A/B/address workstation, cross-register receiving token, Salvage Cycler source and optional Resuscitation Grid. Veilbearer screens the visible Boltspitter across separated evidence stations. The receiving floor lies between the R24 threshold and the Grid rail, beside the protected strip and ceramic routes; bodies from R24's hatches arrive through that threshold when the corrective pair is operated or its capture committed, if the shared loft stage remains uncommitted. A stage already released by P14 is not repeated. A second B threshold at the far end of the receiving floor leads on, in Arrangement B, to R21. | Corrects accidental reversal; removing Cycler stops sorting but preserves transfer evidence and Grid state. Different salvage responses change rigs, not translation. | **B** face toward the approach and a second **B** face. Captures, pulls and Cycler location persist; veil/Grid charge and current approach do not. Protected evidence refuses Cycler selection. |
+
| **R24 Transfer Service Gallery — M04 — O7** | Three sight-separated branch mouths let the player frame pair records and choose the uncertain continuation without claiming that conduits are corridors. Its closable service recess is Aster's counted abort place only when stocked and on a verified R22 short route. Three feeding hatches above the legs, dogged from the bollard apron, drop E07's crowd from the transfer-gallery loft when R23's corrective pair is operated or its capture committed, or when P14's far sample sends its visible alarm along R15→R24; both triggers address the same once-per-expedition stage; the legs stay walkable and the recess lies under none of them. In Arrangement B its legs show R22's pair and the approach to R23; R21 is seen only from inside R23. | Arrival elsewhere or blockage records a factual result; later arrangements can make the same room useful as a release/recovery junction. | **A** face and central release. Traversal result is provenance-bound; no branch label supplies current topology. Hatch closures persist and are independent of the recess, Aster's outside lock and the transfer machinery. |
| **R25 Balance Gallery — M15 — O8, encounter 8/setpiece A, mechanisms 7–8** | Bellback preview, visible Pressers, Breath Bank, Phase-Balance neutral line, fixed rib/stirrup, persistent cap/pin, two feeding mouths in the outer walls and a widened outer floor from which bodies can walk onto the plates. One checkpoint helps free the thermal exchanger core. | With Nozzle/advanced rig the same pressure can be overpowered; low-power timing remains. Completed cap removes one draw side, changing revisit geometry. | **A/B** faces, protected control and retreat. Cap/pin/core state persists; mechanism phase does not; mouth closures persist and population follows the encounter rule. The sealed-mouth variant uses the R35 allocation through R26 in Trace A2. No reactive success wave. |
| **R26 Clean-Side Decontamination — M14 — O8** | Vector Nozzle/air knife, standing-passage wall mark, open removable slab, unmarked welded duct and Mara's distinct rack/refuge. A fixed service circuit visibly runs forward A-in→B-out and reverse B-in→A-out. Purge rack or seal it, then use a quiet short crossing whose counted abort room is R27 when current geometry qualifies. | Reinterprets “marked duct” as broader candidate access and supplies the Decontamination observation used in this inventory's converter example. Removing Nozzle makes cover/timing matter again but leaves the fixed A↔B circuit; Mara's rack has no consequence for R19's culture comparison. | **X(A↔B)/R** faces outside clean refuge. Under [Mechanical Interfaces And Opening Quantities](/Hold%20The%20Flood/Mechanical%20Interfaces%20And%20Opening%20Quantities), its mechanical selector and final detent work without diagnostic power; an actual test pulse requires current power/input. Converter mode, slab, rack, Nozzle and rescue states persist independently; pressure and route are current. |
| **R27 Thermal Exchange Room — M10 — O8/O10** | Exchanger core release and local cooling fixture show the fourth ship assembly as separate from portable Nozzle. Its pressure apron can be Mara's counted clean abort place only when stocked and on the verified R26 route. A proposed second ordinary walking threshold, away from the exchanger release, cooling fixture, R face and clean abort apron, meets R35's existing entry only in Trace A2's arrangement. Live pressure through it must be cleared or separated before the apron qualifies as a clean abort. Optional A/B plate is redundancy. | Empty housing on revisit confirms installation did not duplicate the core; pump-room similarity gains a different service meaning. | **R** face, reachable release and no hidden room. The added walking threshold supplies no network signal or rescue shortcut; its unjoined external relation becomes historical after a shift. Core, plate and stocked checkpoint persist under their owners. This room hosts retrieval, not the ship-side readiness report. No source: M10's gantry fitting belongs to R14. |
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| **R28 Regulator Gallery — M16 — O9, encounter 9, mechanism 9** | R1 pulled/A with scar, R2 pulled/A, R3 intact/B, R4 intact/A; panel/reply face, all four original plates, protected viewing marks, Shutterback/Caller, Capacitor, a feeding grille at the fourth aisle's end and a ceiling maintenance hatch above the reply socket, both R28-owned. Pull R4, observe the line, then test matching R3 B plate. Nothing indispensable resides in R29/R30. | Wrong order loses the clean reply evidence but not work or Capacitor. Revisit can defer/reopen the current line with the same plate. | **A** face, fan flank and alarm lead. Pulls, lines, plate location and Capacitor persist; fan does not; grille and hatch closures persist and population follows the encounter rule. Invalid plates refuse without being consumed. |
+
| **R28 Regulator Gallery — M16 — O9, encounter 9, mechanism 9** | R1 pulled/A with scar, R2 pulled/A, R3 intact/B, R4 intact/A; panel/reply face, all four original plates, protected viewing marks, Shutterback/Caller, Capacitor, a feeding grille at the fourth aisle's end and a ceiling maintenance hatch above the reply socket, both R28-owned. Pull R4, observe the line, then test matching R3 B plate. P14’s external receiver collar at the existing A-face landing may accept the current R15 bridge without adding a door or join. Nothing indispensable resides in R29/R30. | Wrong order loses the clean reply evidence but not work or Capacitor. Revisit can defer/reopen the current line with the same plate. | **A** face, fan flank and alarm lead. Pulls, lines, plate location and Capacitor persist; fan does not; grille and hatch closures persist and population follows the encounter rule. Invalid plates refuse without being consumed. |
| **R29 Plate Service Stack — M20 — O9** | Optional current adjacency to R28 offers empty labelled sleeves and a wider safe staging surface for a plate already removed from its rack; it neither creates nor stores an indispensable plate by default. | Supports recovery/organisation after an invalid reply and distinguishes exact object location from “known plate.” If not adjacent, the player uses R28's own surfaces and R29 waits as a separate lead. | **B/R** faces with lower network release. Any deliberately placed plate identity/location persists; shelf labels are not translation. No duplicate appears and no control crosses rooms. |
| **R30 Reply Observation Niche — M03 — O9** | When currently adjacent through its visible window throat, this optional room gives an alternate capture angle on R28's panel/R4 tell; R28 already contains a valid protected observation position. | Compared with R03's mechanical board, the familiar cell form no longer implies a nonresponsive system. If the relation is absent, this reinterpretation waits rather than blocking Chain 4. | **R** face. Captures persist with room provenance; live panel state must be observed. Glass neither performs a pull nor creates a second panel/control. |
@@ 180,7 180,7 @@
| **8 later part sources** | Fork R02; Stride R05; Arc R13; Thermal Lens R15; Impact Dynamo R20; Salvage Cycler R23; Vector Nozzle R26; Capacitor R28. The four starter parts begin aboard. Each source is one object identity with a stated removal consequence. |
| **10 encounter placements / 2 setpieces** | Placements 1–10: R02, R05, R08, R11, R14+R15 as one connected placement, R17+R20 as one staged placement, R23, R25, R28, R35–R38 as one staged placement. Setpiece A is placement 8/R25; setpiece B is placement 10/R35–R38. Multi-room staging does not create another encounter count. |
| **16 non-playable source volumes** | Patient-bay ward R02; belt-return duct R05; holding volume R08 (later variant only); quarantine ward wing R11; main service run R14; cable-duct run R15; two side wards R17; transfer-gallery loft R24, feeding R23's placement; two source volumes R25; rear rack store and ceiling maintenance space R28; two side-wall volumes and one far-wall volume R35. Each is backing geometry owned by its host and counts as zero rooms because the astronaut never enters it and it carries no action. Making any one enterable with its own action would add a room. |
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| **13 placed mechanisms** | 1 Triage Relay R02; 2 Carousel R05; 3 Triage Relay R08; 4 Carousel R15; 5 Breath Bank R20; 6 Resuscitation Grid R23; 7 Breath Bank R25; 8 Phase-Balance R25; 9 Resuscitation Grid R28; 10 iris/two-clamp assembly R36–R38; **11 clinical profile comparator R19**; **12 reversible converter/roster R34**; **13 reversible core-isolation coupling R40**. The SMALL band's sample has 12 mechanism slots; core isolation is a thirteenth. Iris, comparator, converter and isolation are objective mechanisms distinct from the five reusable trap families. |
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| **14 proposed placed mechanisms** | 1 Triage Relay R02; 2 Carousel R05; 3 Triage Relay R08; 4 Carousel R15; 5 Breath Bank R20; 6 Resuscitation Grid R23; 7 Breath Bank R25; 8 Phase-Balance R25; 9 Resuscitation Grid R28; 10 iris/two-clamp assembly R36–R38; **11 clinical profile comparator R19**; **12 reversible converter/roster R34**; **13 reversible core-isolation coupling R40**; **14 moving scan and bridge R15, with receiver at R28**. The SMALL band's sample has 12 mechanism slots; isolation and the scan bring this proposal two above it. Iris, comparator, converter, isolation and scan are distinct from the five reusable trap families. P14’s rail, return chain, scan bay and receiver share one mechanism identity. |
Mechanism 10 is one placed identity spanning the vault and two counted clamp rooms. Its direct action warns with gauge/flow arrows, stages selector→equalisation→hand-cycle, preserves each clamp/equality/iris checkpoint and reverses a wrong selector through neutral. Mechanism 11 warns through two visible tray feeds, stages patch placement→active/bypass observation→capture, preserves only committed observations and recovers by safe interruption/withdrawal; later isolation may remove the live input. Mechanism 12 previews input/output arrows before a mode change, commits one reversible A↔B transform state, retains independent walking joins and recovers from a wrong physical seam at its network-side release.
@@ 226,6 226,25 @@
For a successful diagnostic opportunity, assume successive ordinary play makes these exact free faces adjacent to the growing network: R31 B-output→R26 B-input while R26 is in reverse; R26's other face then emits A into R33's immutable A-input; R33's fixed exchanger emits R into R32's distinct R-input. Each walking seam is inspected and latched while the game runs, and no record guarantees its next orientation. Only with current diagnostic power and those observed modes can a pulse confirm **R31 B-out→R26 B-in/A-out→R33 A-in/R-out→R32 R-in**. Physical walking completion remains independent of that signal and still requires inclusion of every R01–R40.
+
### Moving-scan route in Arrangement B
+
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The [Moving Scan Expedition](/Hold%20The%20Flood/Moving%20Scan%20Expedition) adds **P14**, one scan-and-bridge fitting, to R15. Its three-position rail stays wholly inside the junction, parallel to clear walking floor. The lamp's station-supply trace, near/middle/far notches, floor brake and stop cord are visible from the approach. The carriage rolls at walking pace, slows visibly when bodies occupy its marked rail envelope and can stop at the next notch without holding a panel. The layout keeps the cable bank, record position, crawl and its separate grille lever, transparent rail/gate, cool bays, Carousel detents, Lens exchanger and all existing arms usable. The cost is substantial floor/ceiling rework, not another room.
+
+
At the far end, observation glass faces a transfer void. An internal scan bay has a pedestrian bulkhead for separation, three visible current-scan slots, a glazed bridge door and a folded span. A covered geared return chain has an accessible control beside the far stop; the player can reach it by the clear floor even when the carriage stopped earlier. The same chain draws the carriage from its current notch to the near stop after a changed arrangement invalidates the alignment. It is part of P14, not another mechanism. Closing the bay separates only creatures outside it; any already inside still need clearing, and the Carousel retains its own state.
+
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This conditional arrangement gives the observation glass a direct R15↔R28 sightline across the void. A receiver collar is mounted at **R28's existing A-face landing**. A complete current three-position sample can show a receiver lock; a separate live release unfolds the span, and actually walking it establishes the current route. This adds one glazed walking opening at R15 but no R28 door, service-signature face or permanent latch. The bridge does not bind either room against a death shift. R28's fan, Grid seams, rack aisles and Caller source lamp remain visible before crossing commits; its existing protected observation and recovery positions remain usable.
+
+
The R15→R24 walking threshold carries a new visible alarm lead. From the R15 approach the player sees that lead and the responding R24 hatches. The far sample can trigger E07's same uncommitted loft stage once, with bodies walking R24→R15. The ordinary R23 trigger and the scan trigger share one source allocation and stage state. R14's service run contributes 30–60 in two bands; R15's cable duct proposes 40–80 in two bands; R24's loft retains 30–60. Their 100–200 total is finite and conditional on unsealed apertures and the shown routes. Final occupancy of 70–120 is a paper overlap target, never a top-up. No new source volume, encounter or copy of the loft crowd is added. [Encounter And Mechanism Placement Inventory](/Hold%20The%20Flood/Encounter%20And%20Mechanism%20Placement%20Inventory) owns their commitment and once-per-expedition accounting.
+
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| Return state | Physical result |
+
|---|---|
+
| Local withdrawal and re-entry | Resume the unfinished scan at its last committed notch with its current slots. Prior bands, marks, scan facts and the shared loft release do not pay or release again. |
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| Living return, unfinished | Keep the same valid partial set and resume at its existing notch. New-expedition source eligibility does not replay carriage triggers already passed. |
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| Living return, complete | Keep the valid set, far-parked carriage and open bridge: walk the earned bypass without a rescan. Any new growth comes from eligible current-frontier pressure. |
+
| Death changes the arrangement | Partial as well as complete samples become historical. The bridge retracts and its door closes; slots say **historical—rewind required**, exposing the return-chain control. Live, interruptible rewind takes the carriage from its current notch to the near stop, leaving three dark current slots for a fresh pass. |
+
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The fitting and dated captures persist; only a complete set for the current arrangement can establish the current receiver lock. The journal can compare captures while fully paused but cannot finish a sample. Rewind and re-entry never clear an expedition's committed source or reward flags; only a new expedition renews eligible, still-viable opportunities. R24's recess remains a separate rescue obligation: pressure must be quiet or separated and the short route personally walked and prepared. Crossing the bridge does not certify a rescue route; survivors still use only independently qualified short crossings.
+
## Two living returns
Both traces follow a living return without a room shift. Temporary upgrades and unchosen offers ended aboard; carried property, permanent work and knowledge remain. The new expedition renews combat populations and regular-growth opportunities through viable sources and routes. A **mouth** is a feeding aperture; a **release stage** is a finite sourced crowd whose resolution changes pressure; a **work stage** is a physical step on a mechanism or objective, with its own checkpoint and warning rules. Major-milestone rewards follow Combat Rules rather than automatically attaching to every resolved release.
@@ 273,7 292,7 @@
**The next expedition.** R01→R14 across its floor: the stair landing is quiet and the hatch is closed. R14→R15: the rail gate stands open, and P04 warns from neutral again because its detent is unlocked. The player crosses between sweeps using the cool bays. New-expedition population placement must respect the closed R14 hatch and use the still-available approaches; the previous clearance does not preserve an empty R15 forever. R15's R11 arm leads towards R-3 by a route with two exposed junctions, so that rescue still waits. R15's third arm opens onto R24.
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**Next sourced encounter.** From R24's entry leg the player sees the bollard, three closed hatches above the legs with dust sifting from the occupied **transfer-gallery loft**, three dog wheels on the apron, the closable recess, R22's booth down one leg and the approach to R23's bay down the other. The loft supplies E07's release stage. It releases only when R23's corrective pair is operated or a capture of it is committed; looking at or recording a clean pair releases nothing. *Knowledge-led choice:* R14 and R15's address plates point to R23's third workstation as the test that matters. The player can first slip along R23's receiving floor past its Veilbearer and Boltspitter to R21 and read the clean pair, then come back to the corrective test knowing which direction to expect. At the apron they choose: dog all three hatches before starting to prevent the release, or leave them open and clear the released crowd or dog the hatches afterward. These choices change pressure and access; their growth and milestone consequences follow Combat Rules rather than a guaranteed choice for stage resolution.
+
**Next sourced encounter.** From R24's entry leg the player sees the bollard, three closed hatches above the legs with dust sifting from the occupied **transfer-gallery loft**, three dog wheels on the apron, the closable recess, R22's booth down one leg and the approach to R23's bay down the other. The loft supplies E07's release stage. Its ordinary trigger is operating R23's corrective pair or committing a capture of it; looking at or recording a clean pair releases nothing. If P14's far-sample trigger has already committed that same stage this expedition, the corrective pair cannot release it again. *Knowledge-led choice:* R14 and R15's address plates point to R23's third workstation as the test that matters. The player can first slip along R23's receiving floor past its Veilbearer and Boltspitter to R21 and read the clean pair, then come back to the corrective test knowing which direction to expect. At the apron they choose: dog all three hatches before starting to prevent the release, or leave them open and clear the released crowd or dog the hatches afterward. These choices change pressure and access; their growth and milestone consequences follow Combat Rules rather than a guaranteed choice for stage resolution.
**Baseline without upgrades.** Walk the ceramic strips; use the Boltspitter's locked line to lure one rail impact; wait out the discharge; frame from cover, since R15 showed that a veil invalidates targets. Dog the hatches first, or step back to the apron to dog them once the release has come, and clear or slip past what landed. The retreat runs R23→R24→R15.
@@ 296,13 315,13 @@
- Move R33's required fixed A→R exchanger into a separately labelled channel on R34 while retaining R34's reversible A↔B mode. The network remains potentially connectable, but one room now carries two transformation behaviors and loses the clearest fixed-versus-reversible comparison.
- Move R37's first clamp into R36's east wall while R38 retains the second; the two-clamp action remains, but staged withdrawal after one full alcove is less spatially expressive and setpiece B becomes denser.
-
Every essential part, assembly, language/story record, rescue and objective retains a named host, and all 13 placed mechanisms remain, but the reduction sacrifices recovery-space variety, one strong reusable control-room contrast and the late network's fixed-versus-reversible transformation discovery. It requires re-review of setpiece B geometry, R34 cue density and the connection graph.
+
Every essential part, assembly, language/story record, rescue and objective retains a named host, and all 14 proposed placed mechanisms remain, but the reduction sacrifices recovery-space variety, one strong reusable control-room contrast and the late network's fixed-versus-reversible transformation discovery. It requires re-review of setpiece B geometry, R34 cue density and the connection graph.
## Strongest experience and accepted costs
**Strongest useful experience.** A familiar spatial grammar gains a different meaning: a pump-shaped room teaches that architecture is not purpose; a two-face hall first teaches recoverable joins and later helps separate walking access from biological isolation; old language and pressure records make a later action intelligible without turning notes into a map. The station becomes a set of persistent places the player can remember and physically assemble, not forty interchangeable skins.
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**Accepted costs.** Forty room identities still require forty distinct state/revisit briefs and later layout work. Multi-room encounters and the iris need careful boundary ownership. Seven rescue-host variants across six rooms increase arrangement constraints. Publishing a 40-room roster exposes a known hidden count. Twelve rooms first designed for small fights now reserve receiving floors, apertures and closures; that is real layout work, and it risks making discovery rooms look alike. Renewed populations and growth must fit routes altered by permanent seals; the R17 passage and both representative routes still need later geometry and experience validation. The sealed route also costs a proposed second R27 threshold and a larger finite 220–370 R35 source allocation. R20 and R23 each need a second face. Three signature families, a reversible converter, Decontamination mode and one fixed converter may still be too much network notation—or too little late-puzzle depth. Zero added rooms depends on future geometry fitting every named refuge, fixture and release inside these counted rooms.
+
**Accepted costs.** Forty room identities still require forty distinct state/revisit briefs and later layout work. Multi-room encounters and the iris need careful boundary ownership. Seven rescue-host variants across six rooms increase arrangement constraints. Publishing a 40-room roster exposes a known hidden count. Twelve rooms first designed for small fights now reserve receiving floors, apertures and closures; that is real layout work, and it risks making discovery rooms look alike. Renewed populations and growth must fit routes altered by permanent seals; the R17 passage and both representative routes still need later geometry and experience validation. The sealed route also costs a proposed second R27 threshold and a larger finite 220–370 R35 source allocation. The moving scan adds P14, substantial R15 rail/bay geometry, one glazed bridge opening, a transfer-void sightline, an R28 receiver and shared E05/E07 source state. R20 and R23 each need a second face. Three signature families, a reversible converter, Decontamination mode and one fixed converter may still be too much network notation—or too little late-puzzle depth. Zero added rooms depends on future geometry fitting every named refuge, fixture and release inside these counted rooms.
## Open questions
@@ 310,7 329,7 @@
- Final room and module names.
- Permitted arrangements, final compatible face distribution and arrangement constraints, and the final joining mechanism (the persistent-latch system is proposed but not selected).
- Common versus rare module repetition.
-
- Exact populations, warning, rearm, recovery, combined and transient variants for the ten encounters and the thirteen placed mechanisms.
+
- Exact populations, warning, rearm, recovery, combined and transient variants for the ten encounters and the fourteen proposed placed mechanisms.
- Exact dimensions, sightlines at crowd density, traversal time and performance of the widened spaces (later layout work).
- Placement of the selected regular fighting growth and larger horde milestones, following the current Combat Rules proposal.
- Found parts versus fabrication (the acquisition model).
