fix: harden the service log indexer's recovery and read paths (#10904)

* [ee] fix: an unreadable ingest cursor should not stop the server booting

Three follow-ups to #10894, all in the service log indexer: a corrupt cursor no
longer takes the server down at boot, the queue's writes are covered against a
real database rather than by hand, and a read skips the dedupe when the partition
it reads holds a single object.

* [ee] test: place the queue's rows relative to the clock the statement reads

Also drops the two `.sqlx` entries the query extraction orphaned: sqlx keys on the
literal including its indentation, so moving a query into a function leaves the
old copy behind.

* [ee] test: make the pair-exactness and rebuild-dedupe tests actually bite

* [ee] docs: state the cursor and dedupe rules without their history

* chore: update ee-repo-ref to 90a368362896ebcc2fcfaaf9510dc9be68c929f7

This commit updates the EE repository reference after PR #761 was merged in windmill-ee-private.

Previous ee-repo-ref: e3423705aa8f2d585bc65474cfd0c4c762ec4ad5

New ee-repo-ref: 90a368362896ebcc2fcfaaf9510dc9be68c929f7

Automated by sync-ee-ref workflow.

---------

Co-authored-by: windmill-internal-app[bot] <windmill-internal-app[bot]@users.noreply.github.com>

backend/.sqlx/query-872be44352d4a27a2005f6bdc38f927ac4886755fd17ec755037763aa92f6c0e.json

@@ -0,0 +1,22 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "WITH moved AS (\n             UPDATE log_file SET indexed_at = CASE\n                 WHEN log_ts > NOW() - make_interval(secs => $1) THEN NULL\n                 ELSE now() END\n             WHERE indexed_at = 'epoch' RETURNING 1)\n         SELECT count(*) AS \"n!\" FROM moved",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "n!",
+        "type_info": "Int8"
+      }
+    ],
+    "parameters": {
+      "Left": [
+        "Float8"
+      ]
+    },
+    "nullable": [
+      null
+    ]
+  },
+  "hash": "872be44352d4a27a2005f6bdc38f927ac4886755fd17ec755037763aa92f6c0e"
+}

backend/.sqlx/query-87e8e034b1cf5ea7ce43870d77d33fa0fd05b067454f0d4686d8b155fe562ffe.json

@@ -0,0 +1,15 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "UPDATE log_file SET indexed_at = now()\n         FROM unnest($1::text[], $2::timestamp[]) AS c(hostname, log_ts)\n         WHERE log_file.hostname = c.hostname AND log_file.log_ts = c.log_ts",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Left": [
+        "TextArray",
+        "TimestampArray"
+      ]
+    },
+    "nullable": []
+  },
+  "hash": "87e8e034b1cf5ea7ce43870d77d33fa0fd05b067454f0d4686d8b155fe562ffe"
+}

backend/.sqlx/query-8e0461855d05dc03919c8979d8acdc85389c0629847d8fabb2ad0aa043957b2f.json

@@ -1,22 +0,0 @@
-{
-  "db_name": "PostgreSQL",
-  "query": "WITH moved AS (\n                     UPDATE log_file SET indexed_at = CASE\n                         WHEN log_ts > NOW() - make_interval(secs => $1) THEN NULL\n                         ELSE now() END\n                     WHERE indexed_at = 'epoch' RETURNING 1)\n                 SELECT count(*) AS \"n!\" FROM moved",
-  "describe": {
-    "columns": [
-      {
-        "ordinal": 0,
-        "name": "n!",
-        "type_info": "Int8"
-      }
-    ],
-    "parameters": {
-      "Left": [
-        "Float8"
-      ]
-    },
-    "nullable": [
-      null
-    ]
-  },
-  "hash": "8e0461855d05dc03919c8979d8acdc85389c0629847d8fabb2ad0aa043957b2f"
-}

backend/.sqlx/query-947f7ca06f6f9a3fd50f817bc9b0c06924719189bec8e5c19866db8d0b87df5e.json

@@ -1,15 +0,0 @@
-{
-  "db_name": "PostgreSQL",
-  "query": "UPDATE log_file SET indexed_at = now()\n                 FROM unnest($1::text[], $2::timestamp[]) AS c(hostname, log_ts)\n                 WHERE log_file.hostname = c.hostname AND log_file.log_ts = c.log_ts",
-  "describe": {
-    "columns": [],
-    "parameters": {
-      "Left": [
-        "TextArray",
-        "TimestampArray"
-      ]
-    },
-    "nullable": []
-  },
-  "hash": "947f7ca06f6f9a3fd50f817bc9b0c06924719189bec8e5c19866db8d0b87df5e"
-}

backend/ee-repo-ref.txt

@@ -1 +1 @@
-bc0c7051585194474078b6c1941a3fb73893d9e5
+90a368362896ebcc2fcfaaf9510dc9be68c929f7