fix(deploy): renumber migration 0077 -> 0078 (finding 1)

Six sibling open PRs in this batch (#560, #561, #563-#566) all added a
migration numbered 0077. Land-queue assignment gives #560 0077 and this
PR 0078, per the batch owner's collision resolution. Renumbers the
migration file and every code/doc reference to it (coordinator, PG
row mapping, fleet.proto + regenerated TS, ADR 0046 addendum, the
live-PG round-trip test's comment).

Review: #561 (comment)

Author: nikhilunni

crates/engram-coordinator/src/api/hosts.rs

@@ -80,7 +80,7 @@ pub struct HostView {
     pub util_cpu_pct: f32,
     /// Issue #540 (host RAM ledger attribution): measured base-shm tmpfs
     /// residency, and the running/parked split of guest PSS. `0` until
-    /// the host's first post-0077 heartbeat. `base_shm_pending_mib` is
+    /// the host's first post-0078 heartbeat. `base_shm_pending_mib` is
     /// deliberately absent here — it's transient host-local state
     /// already folded into `allocatable_mib`, not durable PG state.
     pub util_base_shm_mib: u64,

crates/engram-coordinator/tests/placement_reservation_live_pg.rs

@@ -185,7 +185,7 @@ async fn fleet_free_mib_sql_runs_against_real_pg() {
 #[tokio::test]
 #[ignore = "requires live Postgres at ENGRAM_TEST_DATABASE_URL"]
 async fn ram_ledger_util_columns_round_trip_through_real_pg() {
-    // Issue #540 / migration 0077: `touch_host_heartbeat` writes the RAM
+    // Issue #540 / migration 0078: `touch_host_heartbeat` writes the RAM
     // ledger's attribution columns (util_base_shm_mib, util_parked_pss_mib,
     // util_running_pss_mib), and `list_active_hosts` (row_from_row) reads
     // them back into the SAME `HostRecord.utilization` `reserve_placement`

crates/engram-postgres/src/row.rs

@@ -103,7 +103,7 @@ pub(crate) fn host_from_row(row: &PgRow) -> Result<HostRecord, MetaError> {
     let util_mem_used_mib: i64 = row.try_get("util_mem_used_mib").map_err(col_err)?;
     let util_cpu_pct: f32 = row.try_get("util_cpu_pct").map_err(col_err)?;
     let util_allocatable_mib: i64 = row.try_get("allocatable_mib").map_err(col_err)?;
-    // Issue #540 (host RAM ledger attribution, migration 0077).
+    // Issue #540 (host RAM ledger attribution, migration 0078).
     // `base_shm_pending_mib` has no PG column (transient host-local
     // state, already folded into `util_allocatable_mib` above) — it
     // stays 0 across a DB round-trip; the host's own `/metrics` is the

crates/engram-protocol/proto/engram/app/v1/fleet.proto

@@ -106,7 +106,7 @@ message HostView {
   uint64 free_vcpus = 23;
   // Issue #540 (host RAM ledger attribution): measured base-shm tmpfs
   // residency, and the running/parked split of guest PSS. `0` until the
-  // host's first post-0077 heartbeat. `base_shm_pending_mib` is
+  // host's first post-0078 heartbeat. `base_shm_pending_mib` is
   // deliberately absent — it's transient host-local state already
   // folded into `allocatable_mib`, not durable PG state this view reads.
   uint64 util_base_shm_mib = 24;

…ploy/migrations/0077_host_ram_ledger.sql …ploy/migrations/0078_host_ram_ledger.sqldeploy/migrations/0077_host_ram_ledger.sql renamed to deploy/migrations/0078_host_ram_ledger.sql deploy/migrations/0077_host_ram_ledger.sql renamed to deploy/migrations/0078_host_ram_ledger.sql

@@ -13,7 +13,7 @@
 -- `/metrics` (`engram_host_ram_ledger_mib{category="base_shm_pending"}`) —
 -- not durable multi-replica-consistent state PG needs to hold.
 --
--- Additive + serde-defaulted: pre-0077 hosts (and non-Linux dev backends)
+-- Additive + serde-defaulted: pre-0078 hosts (and non-Linux dev backends)
 -- report 0 for all three, same posture as every other util_* column.
 
 ALTER TABLE hosts ADD COLUMN IF NOT EXISTS util_base_shm_mib BIGINT NOT NULL DEFAULT 0;

docs/adr/0046-placement-memory-reservation.md

@@ -254,7 +254,7 @@ and the pressure gate's `free_pct` can never diverge.
 
 See `crates/engram-host-agent/src/ram_ledger.rs` for the implementation; the
 per-category attribution rides the wire as `HostUtilization.{base_shm_mib,
-parked_pss_mib, running_pss_mib}` (migration 0077) and the
+parked_pss_mib, running_pss_mib}` (migration 0078) and the
 `engram_host_ram_ledger_mib{category=...}` gauge family.
 
 [#147]: https://github.com/cortexapps/engrams/issues/147

orchestrator/src/gen/engram/app/v1/fleet_pb.ts

@@ -197,7 +197,7 @@ export type HostView = Message<"engram.app.v1.HostView"> & {
   /**
    * Issue #540 (host RAM ledger attribution): measured base-shm tmpfs
    * residency, and the running/parked split of guest PSS. `0` until the
-   * host's first post-0077 heartbeat. `base_shm_pending_mib` is
+   * host's first post-0078 heartbeat. `base_shm_pending_mib` is
    * deliberately absent — it's transient host-local state already
    * folded into `allocatable_mib`, not durable PG state this view reads.
    *

web/src/gen/engram/app/v1/fleet_pb.ts

@@ -197,7 +197,7 @@ export type HostView = Message<"engram.app.v1.HostView"> & {
   /**
    * Issue #540 (host RAM ledger attribution): measured base-shm tmpfs
    * residency, and the running/parked split of guest PSS. `0` until the
-   * host's first post-0077 heartbeat. `base_shm_pending_mib` is
+   * host's first post-0078 heartbeat. `base_shm_pending_mib` is
    * deliberately absent — it's transient host-local state already
    * folded into `allocatable_mib`, not durable PG state this view reads.
    *

web/src/lib/types.ts

@@ -163,7 +163,7 @@ export interface HostView {
   util_cpu_pct: number;
   /** Issue #540 (host RAM ledger attribution): measured base-shm tmpfs
    *  residency, and the running/parked split of guest PSS. 0 until the
-   *  host's first post-0077 heartbeat. */
+   *  host's first post-0078 heartbeat. */
   util_base_shm_mib: number;
   util_parked_pss_mib: number;
   util_running_pss_mib: number;

web/src/pages/Fleet.tsx

@@ -198,7 +198,7 @@ function HostCard({
         </div>
         {/* Issue #540: the RAM ledger's attribution — where the host's
             RAM actually went, broken out of the single mem bar above.
-            Hidden until the host's first post-0077 heartbeat. */}
+            Hidden until the host's first post-0078 heartbeat. */}
         {(host.util_base_shm_mib > 0 ||
           host.util_running_pss_mib > 0 ||
           host.util_parked_pss_mib > 0) && (