**Host and warning.** R02 Cargo Turn and compact partner R03 Collar Control, objective 1; P01 Triage Relay and the opening board/rack interface. From R01, the player sees two separated Pressers, the board's two output lamps, the shutter lane and rack through the fixed glazed throat. One Caller waits beside the matching alarm source beyond the shown patient-bay entrance. The final bridge fastener is labelled noisy; the Caller's throat shutters and P01's destination preview identify the answering lane before either commits.

**Crowd, sources and space.** The cargo aisle already holds a slow crowd of Pressers in both lanes — perhaps 20–40 for the L-shaped aisle — whose first arrivals teach backswing and the nearest-visible target; that standing crowd is not a named release stage, but fighting it contributes to regular growth under Combat Rules; exact awards remain open. The **patient-bay ward** is the source volume behind the shutter lane's feeding aperture. The noisy final fastener or a completed Caller call releases its **stage**, perhaps 40–60 bodies through the shutter lane. **Resolution:** clear the stage's committed arrivals, or seal it by completing P01's manual dog hand-cycle with the shutter across the patient-bay lane — an existing persistent commit. A board- or Fork-held shutter closes that lane only while it is held: it suppresses the stage but is not a seal, and an undogged shutter still returns neutral on withdrawal or death. R02's waist-high rack breaks one lane, the board occupies the exposed inside corner, R03's bridge work is visible across the fixed throat, and R01 is the retreat. R02/R03 never shift apart. **Rework:** M02's aisle and the patient-bay aperture were built for a handful of bodies and need widening for this crowd.

**Three approaches.** (1) Install Fork in the board: the board source sends compatible control triggers to rack hold and shutter hold while Fork is seated; Fork supplies no power. While Fork holds it, the closed lane holds back the patient-bay stage, but installation/retrieval costs exposed time and the part remains installed if death comes first. (2) Keep Fork carried: the selector powers the rack continuously, the shutter lane stays open, and the four-A opening Sensor→Projector plus Manual→Barrier rig manages the visible lanes. Carrying Fork competes with the bridge and canister. (3) Baseline physical path: use the selector, fixed rack cover, worn cutter and repeated retreats after committed fasteners; cut P01's alarm lead before the final stage if reachable. Refusing the final hold costs another trip, not progress.

**Persistence and return.** Fasteners, bridge location, cut alarm/dog checkpoint, board state and Fork location persist. Caller eligibility, P01 occupancy, shutter timing and population are current. A released bridge carried at death returns once; one still in the rack does not. The observed R-3 window clue in R01 is a supported record, never a route.

**Host and warning.** R05 Pace Calibration Bay, objective 2, P02 single-detent Carousel; R06 is only a current approach/abort room and R07's coupler housing is optional current adjacency. One Boltspitter stands across the single pillar. Its sac fill/aim line and the Carousel's painted sweep/cool detent are visible before the astronaut enters the gait interval. Pressers trickle from the belt-return duct beyond the far floor mark, in sight.

**Crowd, sources and trigger.** One Boltspitter holds the single pillar's line while a thin, continuous stream of Pressers enters from a **service-belt return duct** at the bay's far end — a river of perhaps 15–30 rather than a hall crowd, because the bay is long and narrow. Starting either gait capture is loud enough to wake the duct fully. **Stage:** the duct's release, which thickens while both gait captures run. **Resolution:** clear its committed arrivals, or seal it by dropping the duct grille. The marked grounded interval and entire service belt—including return and stop—are inside R05. Hard cover sits off the measurement line, so the player must alternate observation, movement and work. **Rework:** M05 needs the duct mouth and grille added.

**Objective and approaches.** Perform the same-astronaut grounded crossing and feet-still carrier pass, then choose whether to remove Stride. If R07 is visibly adjacent, its separate coupler release may follow; otherwise the assembly waits. (1) Opening rig: Sensor→Projector handles the nearest visible target when ready; Manual→Barrier faces the locked bolt line while one capture stage completes. (2) Four-A movement rig on revisit: Stride→Projector plus Manual→Barrier. Only the astronaut's deliberate grounded pass can source the shot; belt motion, Ivo, shove and recoil cannot. (3) Baseline: bait line lock into the pillar, step through the cool detent, thin the stream with the cutter at the duct mouth, and withdraw after either committed observation.

**Rescue/state work.** If Ivo is selected and R05/R06 form a personally walked current short route to the ship, R06 must be stocked and the combat made quiet before I1. **Quiet is necessary but not sufficient** under the mid-crossing safeguard (pending owner decision): the crossing is eligible only if his travel canister also reads at or above the route's full-attempt return mark, a retreat line to R06 is armed that he can operate alone, and R06 carries a local closure tell. Death mid-crossing then leaves him at R06 alive and unsent as world truth, while the astronaut learns nothing aboard. Ivo signals readiness; the astronaut triggers installed Stride or Ivo uses the fixed manual cue, then he walks. Missing R06 adjacency waits—no belt ride becomes an escort. Test captures, Carousel clamp, Stride/coupler locations and survivor confirmation persist; current aim, detent and crowd do not.

**Host and warning.** R08 First Local Latch Hall with a currently adjacent R09 test face, objective 3 and P03 Triage Relay. On the first local-latch introduction, one Clampcrawler is visible beside the centre inspection island and it is the entire combat population. Its arched crouch and jaw-flash lock draw a fixed landing arc when the latch control activates. The answering shutter is physically closed and its empty count lamp confirms that no Presser is eligible during this first lesson.

**Crowd, sources and geometry.** The first latch lesson is a deliberately quiet beat: inside the hall one Clampcrawler is the whole fight, reached through the ordinary crowded route. Entry to that first lesson records one persistent **introduction seen** staging bit whether the player succeeds, refuses, cancels or withdraws. This alarm-only variant is eligible only while its shutter is closed; a persistently dogged-open shutter stays open and excludes this closed-holding variant. It is never closed again merely to stage the crowd. On a later expedition population setup after that introduction, the eligible variant may occupy the **holding volume** behind the alarm-only shutter with a crowd of perhaps 20–40 Pressers, already present before the player enters. The introduction-seen bit does not create a creature on a retry, exit or immediate re-entry within the same expedition; that expedition retains its existing population and defeated enemies stay defeated. This delays the combined variant until a later expedition. A count silhouette shows the holding volume is occupied before activation, but the closed opaque shutter denies mutual local sight and is the only physical route, so this variant is alarm-only. A completed P03 alert opens that route; cutting the lead before alert commitment prevents it. If the alert has already opened the shutter and the crowd is moving, cutting the lead neither closes the route nor dismisses it. **Stage:** the later variant's released crowd while the latch work runs. **Resolution:** clear its committed arrivals. Cutting P03's lead before the alert commits prevents the stage entirely; any additional reward for avoiding that fight remains open. P03's own persistent commit dogs the shutter *open*, so this placement has no physical seal. The first lesson itself is not a named release stage; its ordinary-growth contribution and any milestone mapping remain to be designed. Opposed service faces are readable from the island; the latch work position sits inside the Crawler's possible arc, while one side step and R09 retreat lie outside. P03's alarm lead is exposed before the control. **Rework:** M06's hall and holding volume need space for the later crowd.

**Objective and approaches.** Commit a valid seam or record a safe refusal, walk through and operate the network-side release. (1) In the solo introduction, bait the Crawler: start work, wait for jaw-flash lock, cancel, step out so it skids, then use the recovery to work; this needs no part. (2) Opening rig: Manual→Barrier intercepts a committed leap while Sensor→Projector fires only on a visible valid target. (3) Later Manual→Nozzle displaces the Crawler before lock or clears the work face; recoil clearance is shown at this instance. In the later crowd variant, cut P03's lead before crossing if the alarm-only route should stay closed, or accept the cued second lane; once the alert has committed, the physical approach remains valid.

**Commit and persistence.** A refused signature consumes no cradle pulse and creates no join. The introduction-seen bit, each completed latch dog and the final selected seam persist; an unfinished dog resets. Cut alarm persists; relay occupancy and an undogged shutter rearm neutral only at R08→R09 withdrawal or death. That reset does not turn back a crowd already moving through an opened route. Releasing the seam is another completed hand-cycle and preserves other joins. No creature supplies charge and no successful latch reveals an unseen neighbour.

**Host and warning.** R11 R-3 Approach, with current route R01→R11→R12→R13 only in an eligible arrangement; objective 4. One Flanker is visible in R11's side leg, with chevron/outer-leg cue and central bollard. The quarantine wing's crowd is visible beyond the contested leg. R13's quarantine Arc is an equipment-source fixture.

**Crowd, sources and commitment.** A Flanker pack uses R11's side leg while Pressers pour into the contested junction from the **quarantine ward wing** through a feeding grille in R11's side wall — perhaps 25–50 moving through the T junction as a continuous river rather than standing at once, because the junction is small. R11's three walking legs, serving the ship, the rescue and onward exploration, stay open; the grille is not one of them. **Stage:** the wing's release through the grille. **Resolution:** clear its committed arrivals, or seal the grille. Their current paths, the R12 pressure gauge and R13 refuge door are visible before preparation commits. The first rescue commitment is stocking/confirming travel air after the astronaut has personally walked the exact route this life. **Transfer begins only when the prepared crossing is demonstrably quiet or separated** — its arrivals cleared, bypassed into a shown quiet state, or cut off by a persistent local closure. **Rework:** M04's junction needs the ward-wing grille and its closure.

**Cast variants and state.** R13 holds Yeva-first or Aster-first, never both. The occupant operates the inner door and walks; either party can call ordinary abort to counted R12. Sent requires that same person aboard with ship airlock closed. Death during transfer records last confirmation and an unconfirmed outcome **aboard**; under the armed safeguard (pending owner decision) the world outcome is counted R12, alive and unsent, with a tell on R12's local control only. Quieting E04 alone does not arm it: the marked return margin, the survivor-operable retreat line and that local tell must all exist. It is not ordinary abort, delivery or loss. Quiet-window/population state is current; stocked checkpoints, wall capture, Arc location and confirmed survivor state follow their owners. If the route has two exposed junctions or no present abort refuge, the scene waits.

**Host and warning.** One connected placement across current R14 Pump Hall and R15 Cable Junction, objective 5, P04 Carousel. R14 first shows one Boltspitter, straight aim line and pillar. R15 shows a Veilbearer's folded membrane/anchor preview and a crowd behind a transparent service rail, plus Carousel arc/cool detents. All are visible before the player frames a record.

**Crowd, sources and movement.** R14's tall machine room lets a crowd drift in along the **overhead main's service gantry** — perhaps 30–60 over the placement — while a Boltspitter holds one straight line and pillar. In R15 a Veilbearer screens a second group behind the transparent service rail, fed by the **cable-duct run** through a duct grille beside the open wall crawl, which stays passable; that group cannot cross the rail until its existing gate state allows, so the first cast teaches occlusion without an ambush. If the Boltspitter survives or was bypassed and the current R14→R15 approach remains open, it may walk along that already cued route behind a later veil; if defeated, nothing replaces it. **Stages:** the gantry release while records are framed, and the rail group's release when its gate opens — two separately sourced stages. **Resolution:** clear each stage's committed arrivals, or seal the gantry hatch and the duct grille. **Rework:** the gantry and duct mouths are added layout work in M10/M11.

**Objective and approaches.** Capture the two ordered runs, ending mains, A/B/address cases and open-crawl relation; Lens recovery is optional. (1) Opening rig: use the pillar to break Boltspitter sight, circle the veil edge so Sensor→Projector reacquires a valid nearest target, and spend Manual→Barrier only on the locked line. (2) Later Manual→Nozzle can displace Veilbearer before commitment or push an eligible shield panel into the Carousel arc; it does not blow away the anchored sheet after release. (3) Baseline: wait for veil decay and cool detent, use rail/pillar/cutter, commit one capture and physically withdraw. Taking an old crawl costs oxygen and may end blocked.

**Commit and persistence.** Each capture is atomic: interruption before completion yields none; after commit it persists with room/life provenance. Carousel clamp cuts/lock, moved wall panel and Lens location persist. Sweep phase, veil and enemies reset under their rules. The supplied installed Lens preserves the exchanger's charge-to-heat output. Removing it leaves only that exchanger cold; the Carousel and language evidence remain independent, and reinstalling the same Lens restores the exchanger response. No ordered run names a current route.

**Host and warning.** One staged placement across current R17 Jammed Pressure Approach and R20 Sampling Loop, objective 6, P05 Breath Bank. In the open-local-source pass, R17 first exposes a Flanker side lane with the side wards still quiet, then a Glass Siphon's hose radius/bladder flash across two pillars. If the Flanker survives or follows the visibly connected route, it can reach R20; no replacement pack appears. R20's three-beat Bank indicator, draw lane and cap control are visible before the hand-cycle.

**Growth and renewal — open-local-source pass.** The visible standing Flanker group and the two ward portions are three pressure bands, while the wards remain one physical release stage of 40–80. The gallery approach and each ward door preview one Break Mark; breaking all three bands banks an ordinary Tune under Combat Rules. The completed passage and ward seals persist between expeditions. Fresh groups use the visible gallery approach and still-unsealed ward doors; the route never reopens a seal to renew them. R20 receives only remaining creatures that visibly follow from R17 plus its existing Siphon, with no replacement pack or free mark from touching the valve. Source closure previews show the actual future unpaid marks prevented; banked Tunes and partial marks remain. With both wards sealed, the conditional variant below uses a different conserved source allocation; it does not renew these local groups.

**Sealed-local-source variant.** Under the R35 allocation described in E10, two separated R17 standing bands of 20–30 each give the first two marks; one 20–30 band on the R20-to-R25 approach gives the third. That third band includes the existing R20 Glass Siphon, not an extra Siphon added outside its count. Both ward doors stay locked, and R20 gains no source. Scuffs, facing and successive threshold movement point along the open R35→R27→R26→R25→R20→R17 path; no local group is copied. The first Tune can be taken in the paused journal during the pre-gallery counter lull. Band breaks leave any surviving Siphon active; safe discovery requires it and other pressure cleared or separated, while the Breath Bank remains an independent mechanism. The R17 passage can bypass the two standing bands at the cost of their marks or shorten return; it does not prevent pursuit.

**Objective and approaches.** Close a cap/complete the pressure cycle, capture the source counter, then choose Dynamo and regulator core against carrying space. (1) Opening rig: Sensor→Projector attacks a visible target; Manual→Barrier can catch the hose, and only a Dynamo already locally clamped to that Barrier would receive the impact—none is assumed before recovery. Use retraction plus the Bank's opposite lane for one cap. (2) Under the later six-A allowance, Sensor→Projector plus Manual→Nozzle occupies five A/C; face Nozzle to push the committed Flanker into the draw lane while accepting recoil/clearance and one less unit of free carrying than a four-part rig. (3) Baseline: bait hose into pillars, leave radius, cross on the quiet beat, hand-close one cap and withdraw. Language may guide the marked bypass but cannot make it open.

**Cast and evidence extensions.** E06's population may also gate access to R18/R19 through a currently shown route. Dorn at R18 requires a personally walked current side route; direct-hoist opening commits before its newly exposed route is walked. Under the safeguard (pending owner decision) his crossing additionally needs the marked full-attempt return margin, an armed retreat he can operate to the counted abort room, and that room's local closure tell; a quiet window alone does not supply them. Yeva's later R19 variant requires counted R12 as current abort and a one-junction route. Any absent geometry waits. Story card/ratchet at R18, controlled culture comparison at R19 and source cycle at R20 are separate observations made while the game runs.

**Persistence.** Cap, cutter, the completed R17 internal passage, ward seals, line-cycle, record-drawer, direct boundary, comparator observation, released physical rewards and object locations persist. Current external adjacency still requires observation; the local passage does not guarantee the next room after a shift. Bank phase follows P05's withdrawal/death rule, and tether state follows the Glass Siphon's local rule. A carried Dynamo/core returns once; an unremoved source does not. Death mid-rescue remains unconfirmed, distinct from an ordinary witnessed abort.

**Host and warning.** R23 Material Sorting Bay, objective 7, P06 Resuscitation Grid. In this arrangement, R24 shows R22 and the approach to R23; the player reaches R21 through the walking route **R24→R23→R21** and sees its clean pair there. One Veilbearer and one Boltspitter are visible across R23's separated evidence stations. The veil edge/anchors, bolt aim line, Grid seams/rising meter and transfer drive/fill direction are readable before the corrective pair is operated or its capture commits.

**Crowd, sources and reinforcement.** A Veilbearer screens a Boltspitter across the separated evidence stations while a crowd from one named **transfer-gallery loft** presses in through **three feeding hatches** above R24's walking branches — perhaps 30–60 through the placement. The branches themselves stay walkable for records and continuations. Veilbearer may cast only while it sees the astronaut and a visible ally remains behind the previewed sheet. Material movement along transfer lines is not a creature route. **Stage:** operating R23's corrective pair or committing a capture of that pair triggers that loft's release through its three hatches. Merely looking at the pairs, recording R21/R22's clean pair, or starting an uncommitted capture does not trigger it. **Resolution:** clear its committed arrivals, or seal the hatches. **Rework:** M13's bay and M04's gallery need the hatches, their closures and crowd space.

**Objective and approaches.** Operate/capture the corrective third pair and cross-register cases; on a first source visit, decide whether to remove the one Cycler or leave it in the sorter. (1) Opening rig: break the Boltspitter line with the station, move around the veil edge so Sensor→Projector has a valid target, and face Manual→Barrier only for the locked bolt. (2) On a later return after its committed removal, the source cradle is visibly empty and that same owned Cycler may be in a four-A Manual Trigger (1)→Cycler (2)→Projector (1) rig, leaving Sensor/Barrier aboard. A protected or invalid sample refuses before activation and is not spent; once Cycler validly accepts/consumes selected salvage, a later Projector refusal for readiness/target/occlusion does not refund it. If Cycler was left at source, this branch is unavailable. (3) Baseline: walk ceramic strips, lure a strike onto the enabled Grid from cover, wait for recharge, or cut both clamps/throw the breaker before recording.

**Aster rescue extension.** If non-first Aster waits in R22, E07 must enter a quiet window before A1 — necessary but, under the safeguard (pending owner decision), not sufficient without the marked return margin, an armed survivor-operable retreat to counted R24 and R24's local closure tell. The astronaut must separately walk a current ship→one-junction→R24 abort→R22 refuge route; R24 must be stocked and Aster operates her door. Transfer machinery does not transport her. Missing geometry waits. Her later lock is reversible from the outside panel and cannot seal the whole objective.

**Persistence.** Pair operations/captures, Grid clamp/breaker state, Cycler location, any consumed sample and confirmed survivor state persist. Grid charge follows P06's withdrawal/death rule; veil and aim follow their creatures' temporary-state rules. An interrupted capture yields no record; an interrupted transfer operation retains only its named completed fixture stage. Old pair locations after death are historical even when their records remain valid evidence.

**Host and warning.** R25 Balance Gallery, objective 8, P07 Breath Bank and P08 Phase-Balance; R26/R27 contain the optional Nozzle/Mara/exchanger follow-through. Bellback stands alone across the fixed rib so its dust draw, planted cone and collapse recovery can be read before the crowd enters from its two shown feeding mouths in the open-local-source pass, or through the warned R26 threshold in the sealed variant. Bank frost/three-beat lane, plate outlines, plumb cage and swing arc remain simultaneously visible.

**Major opportunity and preview.** E08 remembers two facts once per expedition, in either order: a first band from an unsealed mouth or the explicitly mapped R26 threshold committed, and Bellback was answered. The gallery shows each fact and announces transformation ready once both are true. A valid answer is escaping the locked cone or keeping it behind the fixed rib until the wave releases, catching the wave with a faced Barrier, interrupting the unfinished brace by displacement, or defeating Bellback. An unblocked hit does not count, but a later valid counter or defeat can. Early defeat records the answer before a later mapped band commitment; prior commitment waits for an answer. The first mapped band commitment and Bellback warning occur in early gather before that gallery band can earn its mark, leaving later bands as a proving ground. Bellback gains no immunity and no replacement appears. The transformation is separate from ordinary Tunes and can be taken in the paused journal. Each mouth previews the actual unpaid marks in its uncommitted bands that a seal would prevent; sealing one early leaves the other mouth and Bellback able to satisfy the opportunity. The variant below maps both local mouths sealed; other configurations still need renewal mapping. [Combat Rules](/Hold%20The%20Flood/Combat%20Rules) owns the detailed event and queue rules.

**Sealed-local-source variant.** E10 allocates two R35-owned bands of 40–65 each, 80–130 total, to R25. Exactly one renewed Bellback is included in the first cohort and already stands across the rib; only its remaining members cross from R26 after the visible approach warning. That crossing records horde engaged. The second 40–65 cohort is separately warned and may overlap the first; its motion follows the physical route, not kill speed or a reward trigger. Both local mouths remain sealed. The same order-independent Bellback answer readies the major without waiting for a Tune selection; efficient early defeat never causes a replacement. The full outward route already offered a Tune from two R17 bands and the R20 band, so a compatible ordinary transformation can be used against the first gallery density. Clearing or separating the remaining pressure earns the far-wall lull.

**Objective and approaches.** Complete one persistent cap or rib pin, then decide whether to recover exchanger core/Nozzle. (1) Four-A opening rig: Sensor→Projector supplies ordinary fire; Manual→Barrier faces Bellback's locked pressure cone or a Presser strike. Barrier does not stop oxygen drain or heat, and a Dynamo cannot feed unless locally clamped. Seal one mouth early to keep the crest manageable. (2) A developed crowd build — an arc chain fed by density, with charge stored for a manual release — turns the crest into the payoff in the neutral lane. [Build Rules](/Hold%20The%20Flood/Build%20Rules) owns how many ordinary outputs it carries and how its links change; insufficient readiness or targets safely produce less effect. (3) Baseline: leave the fixed cone, shelter at the rib, cross on the Bank's opposite beat, occupy the stirrup and hand-cycle one cap before retreating.

**Mara rescue extension.** After a real quiet window, R26 can host M1 only if the astronaut has walked its one-junction route and stocked counted R27 as clean abort. The proposed second R27 walking threshold meets R35 only in this variant and lies away from the exchanger release, cooling fixture, R face and clean abort apron. Its live pressure must be cleared or separated before R27 qualifies; it supplies no network signal, extra room or rescue shortcut. Mara chooses/operates her inner curtain and walks; her rack purge or seal is distinct from the R19 culture comparison. Nozzle removal changes the air knife, not the A↔B service transformer. Missing geometry waits rather than adding refuge stages.

**Persistence.** Completed cap/pin, rack choice, wall panel, converter mode, Nozzle/exchanger locations, and committed captures persist. Unpinned balance returns neutral and uncapped Bank phase resets on withdrawal/death. Placed loose mass stays where placed and warns/retriggers normally. Death creates no rescue conclusion the astronaut can read: under the safeguard (pending owner decision) Mara's armed retreat reaches her counted clean abort room alive and unsent, and that fact stays a local tell there rather than anything transmitted aboard.

**Host and warning.** R28 Regulator Gallery, objective 9, P09 Resuscitation Grid; R29/R30 are optional current observation/staging rooms. One Shutterback begins with its first Pressers visibly inside its previewed shelter angle. One Caller and its answering source wait along the named alarm route, shown before the R4 pull. Fan shadow, heel-clamp click, Grid meter/seams and Caller's throat/source lamp are all readable from R28's own protected mark.

**Crowd, sources and trigger.** Shutterback's fan shelters a crowd of Pressers moving down R28's four rack aisles — perhaps 30–60 — released from a sealed store behind a **feeding grille at the end of the fourth rack aisle**, which belongs to R28. Pulling R4 is noisy and may start the Caller brace; a completed call releases a second stage through an **overhead maintenance hatch in R28's own ceiling** above the reply socket, whose route is shown before the pull. Cutting the alarm first prevents that second stage; it does not dismiss bodies already travelling. **Stages:** the rack-aisle release, and the ceiling-hatch release if the call completes. **Resolution:** clear each stage's committed arrivals, or seal the aisle grille and the ceiling hatch. Neither source depends on R29 or R30 adjacency. **Rework:** M16 needs the aisle grille, the ceiling hatch, their closures and aisle space.

**Evidence and persistence.** R4 physical pull and new line are separate commits. Wrong pull order can lose the clean R3-B test but not Capacitor or general work. Pulls, scar, lines, plate location, alarm cut, Grid breaker/clamps and Capacitor location persist. Fan/veil-like occlusion and Grid charge follow their local reset rules. Invalid plates produce no line and remain reclaimable; the interface never labels an interpretation correct.

**Host and warning.** Current R35 approach into compact R36–R40 core-boundary assembly, objective 11; P10 iris/two-clamp mechanism, followed by P13 isolation after access. Shutterback's shelter angle, Siphon radius/bladder, Caller/source, the hall's feeding mouths and the second source's entrance are visible before commitment. R35's two pillars, R36 selector lane, R37 first-clamp refuge, R38 longer fan flank/second clamp and retreat are physically related.

**Crowd, sources and phases.** R35's long approach hall carries the main crowd from two sealable **feeding mouths** in its side walls, perhaps 80–150 at once, with Shutterback sheltering part of it and Siphon holding the pillar line. A completed Caller call releases a second stage through a **feeding hatch in R35's far wall**. R36's two side openings remain the walking passages to the clamp rooms and are never sealed. Phase 1 chooses exposed selector, longer flank or first clamp while the hall wakes. Phase 2 resolves or accepts the second stage and the special pressures inside the surge. Phase 3 equalises and hand-cycles the iris in the break. **Stages:** the hall mouths' release, and the far-wall hatch release if the call completes. **Resolution:** clear each stage's committed arrivals, or seal its mouths or hatch. Opening R39/R40 creates no new combat population. **Rework:** R35's side mouths, far-wall hatch and crowd floor space are added layout work in M07.

**Conditional source allocation for the sealed route.** For this arrangement only, the two existing side-mouth volumes receive a proposed finite total of **220–370 bodies**: two R17 bands of 20–30 (**40–60**), one R20-to-R25 band of **20–30 including its Glass Siphon**, two R25 bands of 40–65 (**80–130 including one Bellback**), and **80–150 retained at R35 at once**. Thus **140–220** migrate and **80–150** remain; this preserves the receiver hall's simultaneous occupancy rather than treating it as the whole finite source. Its existing Shutterback, Siphon and Caller behaviors remain. The far-wall stage is separate from this total and still requires the Caller.

| **P02 — Sterilization Carousel 1 — R05 / E02** | One treatment arm sweeps the marked gait-side arc from a single movable detent. Painted floor sector, iris closure and heat glare warn before release; one cool bay and pillar are reachable without entering the gait interval. The manual clamp is on the entrance side. Heat is neither impact nor a Barrier-guaranteed block. | The arm warns→locks→sweeps→cools. Temporary phase returns to shown neutral on withdrawal/death. First clamp cut and final detent lock are separate persistent commits; interruption loses only the active cut. Time the cool bay, use pillar, move an eligible shield/Nozzle later, or cut/lock it. The astronaut-only gait test waits if its line is unsafe; P02 never performs that test. |

| **P04 — Sterilization Carousel 2 — R15 / E05** | Three visible detents sweep different cable-junction sectors. Transparent rail and two cool bays make the next arc readable while preserving the Veil/Bolt sight problem. The two clamp faces are reachable from different bays; Lens exchanger is outside the sweep and is a part source, not Carousel power. | Each sweep follows warn/lock/heat/cool and resets neutral after R15→R14 withdrawal/death unless detent is locked. Clamp one cut persists; second unfinished cut resets; final lock persists. Wait/route around, push a shield or eligible creature with Nozzle, or cut at a cool detent. Capturing a builder run does not rotate it. The installed Lens preserves charge-to-heat output; removing it leaves only its exchanger cold. |

| **P06 — Resuscitation Grid 1 — R23 / E07** | Conductive seams occupy the transfer floor; ceramic strips and both feed clamps are visible from the evidence strip. A struck rail rings, seams light outward and meter rises before a limited discharge. Creature/body/astronaut impact on the rail can arm it; transfer flow, veil release and remote Projector hits do not unless they physically strike this named rail. | Arm→meter→one discharge→visible recharge; charge resets on withdrawal/death. Each cut clamp persists; thrown breaker commits disabled state. Reclosing is a separate action from the safe strip. Walk ceramic, avoid hits, disable, or lure a group and strike from cover. Grid arcs are not the portable Arc Emitter and cannot feed it or create a language result. |

| **P11 — Clinical profile comparator — R19 / E06 extension** | Shielded twin trays share one recorded culture source but have physically separate active-profile and named-bypass feeds. Feed path, equivalent patch labels, tissue viewer and capture position are visible from the safe side. It accepts only the two controlled non-sentient patches; Mara's rack and M2 salvage are ineligible and refuse before placement. | Commit patch A placement, patch B placement, each completed exposure observation, then optional capture. An interrupted exposure records only prior committed observation; withdrawal preserves placed patches under their state. Full pair supports a limited comparison. After P13 isolation, two ordinary closures show current disconnection only; missing live evidence is not regenerated. Player may postpone, remove power before exposure, or use physical bypass; no survivor/test is mandatory. |

| **P13 — Reversible core isolation — R40 / after E10** | Old isolation collar, mixed-profile conduit, live coupling tell, human bypass and manual dogs occupy R40 inside compact core group. Preview at the R36-side release states: disconnect mixed profile; ordinary revival unchanged; reversible here. The same approach remains walkable after seating. It neither opens the iris nor changes persistent joins. | Stages: inspect tell→release bypass→seat collar→close dogs. Each closed dog commits; disconnection commits only when all are closed. Interruption/death preserves completed dogs and prior live state. Reopening uses the same reachable release, reverses dogs/collar while the game runs and reconnects only if source is active. Leave coupled, isolate, reopen or postpone. Cost is time/exposure and possible lost live comparison, not mortality or an ending. |

| **R02/R03 service board/rack** | Opening objective fixture, not P01. The board is the source, Fork passes compatible triggers, fixed conduit reaches rack/shutter, invalid sockets refuse, and retrieval remains possible from R02. Its stages are fully exercised in E01. |

| **E01** | O1, R02–R03 compact assembly | Presser crowd in the aisle; patient-bay source woken by Caller or final fastener; P01 | Fork R02, isolation bridge R03, opening board, R-3 window R01 |

| **E03** | O3, R08 with current R09 | First lesson: Clampcrawler alone, no crest; eligible later-expedition variant releases a holding-volume crowd, alarm-only; P03 | First local latch/refusal/release; no part source |

| **E05** | O5, current R14–R15 relation | Boltspitter, Veilbearer; crowds from gantry and cable duct; P04 | Builder runs, A/B/address, wall crawl, Lens R15 |

| **E07** | O7, R24→R23→R21 walking route; R22 and R23 approach visible from R24 | Veilbearer, Boltspitter; one transfer-gallery loft feeds three R24 hatches; release answers R23 corrective-pair operation or committed capture; P06 | Three transfer pairs, Cycler R23, A1-later R22/R24 rescue |

| **E09** | O9, R28; optional R29/R30 | Shutterback-sheltered crowd from R28's aisle grille; Caller releasing a second stage through R28's ceiling hatch; P09 | Regulator reply, Capacitor R28; no rescue |

- Exact regular-growth cadence and major-horde-milestone mapping across these placements, including rewards for avoiding fights; the owner has selected the growth direction.

- Exact timing, damage, oxygen drain, crowd sizes beyond these proposals, on-screen effect density, performance, thresholds, cooldowns, target overrides, overflow, simultaneous warning priority, population renewal and its presentation for new expeditions while permanent changes remain, plus ongoing-expedition population continuity, exhaustive arrangement/geometry/state variants, P13's full detail, full scripts, accessibility cue forms, asset selection, implementation and validation are later work.