feat: record the Ref pool's bid side over time

Each pool read now writes a snapshot — totals, swap volumes, and what
selling 10, 100, 1,000 and 5,000 of the asset would fetch from the
pool's own `quote` view — and the order book whenever it changed
(migration 0014). `/v1/chains/{chain}/ref/bids` turns that into the
series #41 asks for: posted orders, money held otherwise, net swapped
in, the quotes; the book now against N hours ago; and every level
change, classified by `dcl::level_changes` — a shrink the pool's payout
in the same minute accounts for is "taken by a swap" (consistent with
one, not proof), the rest "withdrawn", allocated nearest the price
first. The `ref-dcl` page shows it as four one-hue sparkline tiles and
two tables, never one chart in several colours.

Also records in CLAUDE.md why three deploys were cancelled: Gitea
cancels runs by commit when a branch at that commit is deleted.

Refs #41

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015pkwBsR54NRmZyU4QVhvfj

.sqlx/query-2e942fa1bbe65e8d4779710df272b2fd7ae4bee99521043a6ee5b005945b19e4.json

@@ -0,0 +1,23 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "select min(at) as at from ref_pool_snapshot where chain = $1 and pool_id = $2",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "at",
+        "type_info": "Timestamptz"
+      }
+    ],
+    "parameters": {
+      "Left": [
+        "Text",
+        "Text"
+      ]
+    },
+    "nullable": [
+      null
+    ]
+  },
+  "hash": "2e942fa1bbe65e8d4779710df272b2fd7ae4bee99521043a6ee5b005945b19e4"
+}

.sqlx/query-4fe0a5f2a76e82f6044b4fb9761f429156968bd541b854cb643b092c2081b59b.json

@@ -0,0 +1,84 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "\n            select at, current_point,\n                   total_x::text as \"total_x!\", total_y::text as \"total_y!\",\n                   total_order_x::text as \"total_order_x!\", total_order_y::text as \"total_order_y!\",\n                   volume_x_in::text as \"volume_x_in!\", volume_x_out::text as \"volume_x_out!\",\n                   volume_y_in::text as \"volume_y_in!\", volume_y_out::text as \"volume_y_out!\",\n                   quotes\n            from ref_pool_snapshot\n            where chain = $1 and pool_id = $2 and at >= $3\n            order by at\n            ",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "at",
+        "type_info": "Timestamptz"
+      },
+      {
+        "ordinal": 1,
+        "name": "current_point",
+        "type_info": "Int4"
+      },
+      {
+        "ordinal": 2,
+        "name": "total_x!",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 3,
+        "name": "total_y!",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 4,
+        "name": "total_order_x!",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 5,
+        "name": "total_order_y!",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 6,
+        "name": "volume_x_in!",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 7,
+        "name": "volume_x_out!",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 8,
+        "name": "volume_y_in!",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 9,
+        "name": "volume_y_out!",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 10,
+        "name": "quotes",
+        "type_info": "Jsonb"
+      }
+    ],
+    "parameters": {
+      "Left": [
+        "Text",
+        "Text",
+        "Timestamptz"
+      ]
+    },
+    "nullable": [
+      false,
+      false,
+      null,
+      null,
+      null,
+      null,
+      null,
+      null,
+      null,
+      null,
+      false
+    ]
+  },
+  "hash": "4fe0a5f2a76e82f6044b4fb9761f429156968bd541b854cb643b092c2081b59b"
+}

.sqlx/query-6610f568efe388ddafd4b33cafae6e17c0fbbb049ce06f2286b2b5ed963adec1.json

@@ -0,0 +1,26 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "\n            insert into ref_pool_snapshot\n                (chain, pool_id, at, current_point, total_x, total_y, total_order_x,\n                 total_order_y, volume_x_in, volume_x_out, volume_y_in, volume_y_out, quotes)\n            values ($1, $2, $3, $4, $5::text::numeric, $6::text::numeric, $7::text::numeric,\n                    $8::text::numeric, $9::text::numeric, $10::text::numeric,\n                    $11::text::numeric, $12::text::numeric, $13)\n            on conflict (chain, pool_id, at) do nothing\n            ",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Left": [
+        "Text",
+        "Text",
+        "Timestamptz",
+        "Int4",
+        "Text",
+        "Text",
+        "Text",
+        "Text",
+        "Text",
+        "Text",
+        "Text",
+        "Text",
+        "Jsonb"
+      ]
+    },
+    "nullable": []
+  },
+  "hash": "6610f568efe388ddafd4b33cafae6e17c0fbbb049ce06f2286b2b5ed963adec1"
+}

.sqlx/query-cf30b6074ccff2995fbf42200608ba36fc08d7be6c485eb6a836e45aedc3546f.json

@@ -0,0 +1,17 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "\n            insert into ref_pool_book (chain, pool_id, at, levels)\n            select $1, $2, $3, $4\n            where not exists (\n                select 1 from (\n                    select levels from ref_pool_book\n                    where chain = $1 and pool_id = $2\n                    order by at desc limit 1\n                ) last\n                where last.levels = $4\n            )\n            on conflict (chain, pool_id, at) do nothing\n            ",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Left": [
+        "Text",
+        "Text",
+        "Timestamptz",
+        "Jsonb"
+      ]
+    },
+    "nullable": []
+  },
+  "hash": "cf30b6074ccff2995fbf42200608ba36fc08d7be6c485eb6a836e45aedc3546f"
+}

.sqlx/query-f28569d76e122b1dfbd3c7ec04c4038e5d5ce750c5294e089aea74bcf926e9bb.json

@@ -0,0 +1,30 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "\n            select at as \"at!\", levels as \"levels!\" from (\n                (select at, levels from ref_pool_book\n                 where chain = $1 and pool_id = $2 and at < $3\n                 order by at desc limit 1)\n                union all\n                (select at, levels from ref_pool_book\n                 where chain = $1 and pool_id = $2 and at >= $3)\n            ) b\n            order by at\n            ",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "at!",
+        "type_info": "Timestamptz"
+      },
+      {
+        "ordinal": 1,
+        "name": "levels!",
+        "type_info": "Jsonb"
+      }
+    ],
+    "parameters": {
+      "Left": [
+        "Text",
+        "Text",
+        "Timestamptz"
+      ]
+    },
+    "nullable": [
+      null,
+      null
+    ]
+  },
+  "hash": "f28569d76e122b1dfbd3c7ec04c4038e5d5ce750c5294e089aea74bcf926e9bb"
+}