Merge remote session logs

15/26810bf9c1/0/content_hash.txt

@@ -0,0 +1 @@
+sha256:a9b5a1b4f23d30a8266524cf397682b8fc8e155606b43d2dca29be961e51f7af

15/26810bf9c1/0/context.md

@@ -0,0 +1,18 @@
+# Session Context
+
+## User Prompts
+
+### Prompt 1
+
+Implement the following plan:
+
+# Make SQLite Memory Limits Configurable via config.json
+
+## Context
+
+Fixes 1-4 for the SQLite memory leak are already implemented on this branch. The hardcoded defaults (200MB cache per connection, 1GB soft heap limit) are conservative. On the production server with 512GB RAM, these could be tuned higher for better query performance. Additionally, `RepositoryConfig` and `SetConfig()` exist but are **never wired up** — there's currently no way to override any re...
+
+### Prompt 2
+
+Also add a section in the README.md discussing and documenting the new db options.
+

15/26810bf9c1/0/metadata.json

@@ -0,0 +1,30 @@
+{
+  "cli_version": "0.4.8",
+  "checkpoint_id": "1526810bf9c1",
+  "session_id": "50b2b10a-1be0-441f-aafb-3c5828f0fcc9",
+  "strategy": "manual-commit",
+  "created_at": "2026-03-11T05:21:50.041031Z",
+  "branch": "optimize-db-indices",
+  "checkpoints_count": 2,
+  "files_touched": [
+    "README.md"
+  ],
+  "agent": "Claude Code",
+  "turn_id": "0dae2aa2a939",
+  "token_usage": {
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+    "cache_read_tokens": 488339,
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+  },
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+    "human_removed": 0,
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+    "agent_percentage": 100
+  }
+}

15/26810bf9c1/0/prompt.txt

@@ -0,0 +1,192 @@
+Implement the following plan:
+
+# Make SQLite Memory Limits Configurable via config.json
+
+## Context
+
+Fixes 1-4 for the SQLite memory leak are already implemented on this branch. The hardcoded defaults (200MB cache per connection, 1GB soft heap limit) are conservative. On the production server with 512GB RAM, these could be tuned higher for better query performance. Additionally, `RepositoryConfig` and `SetConfig()` exist but are **never wired up** — there's currently no way to override any repository defaults from config.json.
+
+## Current State (already implemented on this branch)
+
+- `_cache_size = -200000` (200MB per connection, hardcoded) — **too low for 80GB DB, will be made configurable**
+- `soft_heap_limit = 1073741824` (1GB process-wide, hardcoded) — **too low, will be made configurable**
+- `ConnectionMaxIdleTime = 10 * time.Minute` (hardcoded default)
+- `MaxOpenConnections = 4` (hardcoded default)
+- Context propagation to all query call sites (already done)
+
+## Problem
+
+`repository.SetConfig()` exists but is never called from `main.go`. The `initDatabase()` function (line 110) just calls `repository.Connect(config.Keys.DB)` directly. There's no `"db-config"` section in `ProgramConfig` or the JSON schema.
+
+## Proposed Changes
+
+### 1. Add SQLite memory fields to `RepositoryConfig`
+
+**File:** `internal/repository/config.go`
+
+Add two new fields with sensible defaults:
+
+```go
+type RepositoryConfig struct {
+    // ... existing fields ...
+
+    // DbCacheSizeMB is the SQLite page cache size per connection in MB.
+    // Uses negative PRAGMA cache_size notation (KiB). With MaxOpenConnections=4
+    // and DbCacheSizeMB=200, total page cache is up to 800MB.
+    // Default: 200 (MB)
+    DbCacheSizeMB int
+
+    // DbSoftHeapLimitMB is the process-wide SQLite soft heap limit in MB.
+    // SQLite will try to release cache pages to stay under this limit.
+    // It's a soft limit — queries won't fail, but cache eviction becomes more aggressive.
+    // Default: 1024 (1GB)
+    DbSoftHeapLimitMB int
+}
+```
+
+Update `DefaultConfig()`:
+```go
+DbCacheSizeMB:     2048,  // 2GB per connection
+DbSoftHeapLimitMB: 16384, // 16GB process-wide
+```
+
+**Rationale for defaults:** With an 80GB production database on a 512GB server, we want the cache to hold a significant portion of the DB. At 4 connections × 2GB = 8GB default page cache, plus 16GB soft heap limit. The previous 200MB/1GB hardcoded values were too conservative and would hurt query performance by forcing excessive cache eviction. These defaults use ~5% of a 512GB server — still safe for smaller machines, while enabling good performance on production.
+
+### 2. Use config values in `Connect()` and `setupSqlite()`
+
+**File:** `internal/repository/dbConnection.go`
+
+In `Connect()`, replace the hardcoded cache_size:
+```go
+cacheSizeKiB := repoConfig.DbCacheSizeMB * 1024  // Convert MB to KiB
+connectionURLParams.Add("_cache_size", fmt.Sprintf("-%d", cacheSizeKiB))
+```
+
+Change `setupSqlite()` to accept the config and use it for soft_heap_limit:
+```go
+func setupSqlite(db *sql.DB, cfg *RepositoryConfig) error {
+    pragmas := []string{
+        "temp_store = memory",
+        fmt.Sprintf("soft_heap_limit = %d", cfg.DbSoftHeapLimitMB*1024*1024),
+    }
+    // ...
+}
+```
+
+Update the call site in `Connect()`:
+```go
+err = setupSqlite(dbHandle.DB, &opts)  // was: setupSqlite(dbHandle.DB)
+```
+
+### 3. Add `"db-config"` section to `ProgramConfig` and JSON schema
+
+**File:** `internal/config/config.go`
+
+Add a new struct and field to `ProgramConfig`:
+
+```go
+type DbConfig struct {
+    CacheSizeMB       int `json:"cache-size-mb"`
+    SoftHeapLimitMB   int `json:"soft-heap-limit-mb"`
+    MaxOpenConnections int `json:"max-open-connections"`
+    MaxIdleConnections int `json:"max-idle-connections"`
+    ConnectionMaxIdleTimeMins int `json:"max-idle-time-minutes"`
+}
+
+type ProgramConfig struct {
+    // ... existing fields ...
+    DbConfig *DbConfig `json:"db-config"`
+}
+```
+
+**File:** `internal/config/schema.go`
+
+Add the schema section for validation.
+
+### 4. Wire `SetConfig()` in `initDatabase()`
+
+**File:** `cmd/cc-backend/main.go`
+
+```go
+func initDatabase() error {
+    if config.Keys.DbConfig != nil {
+        cfg := repository.DefaultConfig()
+        dc := config.Keys.DbConfig
+        if dc.CacheSizeMB > 0 {
+            cfg.DbCacheSizeMB = dc.CacheSizeMB
+        }
+        if dc.SoftHeapLimitMB > 0 {
+            cfg.DbSoftHeapLimitMB = dc.SoftHeapLimitMB
+        }
+        if dc.MaxOpenConnections > 0 {
+            cfg.MaxOpenConnections = dc.MaxOpenConnections
+        }
+        if dc.MaxIdleConnections > 0 {
+            cfg.MaxIdleConnections = dc.MaxIdleConnections
+        }
+        if dc.ConnectionMaxIdleTimeMins > 0 {
+            cfg.ConnectionMaxIdleTime = time.Duration(dc.ConnectionMaxIdleTimeMins) * time.Minute
+        }
+        repository.SetConfig(cfg)
+    }
+    repository.Connect(config.Keys.DB)
+    return nil
+}
+```
+
+### 5. Log effective values on startup
+
+**File:** `internal/repository/dbConnection.go`
+
+After setting PRAGMAs, log the effective values so operators can verify:
+```go
+cclog.Infof("SQLite config: cache_size=%dMB/conn, soft_heap_limit=%dMB, max_conns=%d",
+    repoConfig.DbCacheSizeMB, repoConfig.DbSoftHeapLimitMB, repoConfig.MaxOpenConnections)
+```
+
+## Example config.json (for 512GB server with 80GB database)
+
+```json
+{
+  "main": {
+    "db": "./var/job.db",
+    "db-config": {
+      "cache-size-mb": 16384,
+      "soft-heap-limit-mb": 131072,
+      "max-open-connections": 8,
+      "max-idle-time-minutes": 30
+    }
+  }
+}
+```
+
+This would give: 8 connections × 16GB cache = 128GB max page cache, with a 128GB soft heap limit. The entire 80GB database can be cached in memory. On a 512GB server that's ~25% of RAM.
+
+**Sizing guidance (for documentation):**
+- `cache-size-mb`: Set to `DB_size / max-open-connections` to allow the entire DB to be cached. E.g., 80GB DB with 8 connections → 10GB per connection minimum.
+- `soft-heap-limit-mb`: Set to total desired SQLite memory budget. Should be ≥ `cache-size-mb × max-open-connections` to avoid cache thrashing.
+
+## Files to Modify
+
+| File | Changes |
+|------|---------|
+| `internal/repository/config.go` | Add `DbCacheSizeMB`, `DbSoftHeapLimitMB` fields + defaults |
+| `internal/repository/dbConnection.go` | Use config values instead of hardcoded; pass config to `setupSqlite`; add startup log |
+| `internal/config/config.go` | Add `DbConfig` struct and field to `ProgramConfig` |
+| `internal/config/schema.go` | Add `"db-config"` JSON schema section |
+| `cmd/cc-backend/main.go` | Wire `SetConfig()` in `initDatabase()` |
+
+## Verification
+
+1. `go build ./...` — compiles
+2. `go test ./internal/repository/... ./internal/config/...` — tests pass
+3. Without `db-config` in config.json: defaults apply (200MB cache, 1GB heap) — backwards compatible
+4. With `db-config`: verify with `PRAGMA cache_size;` and `PRAGMA soft_heap_limit;` in sqlite3 CLI
+5. Check startup log shows effective values
+
+
+If you need specific details from before exiting plan mode (like exact code snippets, error messages, or content you generated), read the full transcript at: /Users/jan/.claude/projects/-Users-jan-prg-CC-cc-backend/520afa6a-6a70-437b-96c1-35c40ed3ec48.jsonl
+
+---
+
+Also add a section in the README.md discussing and documenting the new db options.

15/26810bf9c1/metadata.json

@@ -0,0 +1,26 @@
+{
+  "cli_version": "0.4.8",
+  "checkpoint_id": "1526810bf9c1",
+  "strategy": "manual-commit",
+  "branch": "optimize-db-indices",
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+  "files_touched": [
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+}

15/cc90a0347a/0/content_hash.txt

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15/cc90a0347a/0/metadata.json

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+{
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15/cc90a0347a/0/prompt.txt

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+Update the ReleaseNotes for the bugfix release 1.5.1 . Keep the existing information and highlight changes and fixes.

15/cc90a0347a/metadata.json

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+}

35/f06df74b51/0/content_hash.txt

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35/f06df74b51/0/metadata.json

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35/f06df74b51/0/prompt.txt

@@ -0,0 +1 @@
+Does it make sense to also inline the literal state value in other places?

35/f06df74b51/1/content_hash.txt

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35/f06df74b51/1/metadata.json

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35/f06df74b51/metadata.json

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3d/8def28e96e/0/content_hash.txt

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3d/8def28e96e/0/metadata.json

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3d/8def28e96e/0/prompt.txt

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+commit this

3d/8def28e96e/metadata.json

@@ -0,0 +1,27 @@
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40/d806a3240c/0/content_hash.txt

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40/d806a3240c/0/metadata.json

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40/d806a3240c/0/prompt.txt

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+commit this

40/d806a3240c/metadata.json

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52/552d244fc5/0/content_hash.txt

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52/552d244fc5/0/context.md

@@ -0,0 +1,26 @@
+# Session Context
+
+## User Prompts
+
+### Prompt 1
+
+Implement the following plan:
+
+# Make SQLite Memory Limits Configurable via config.json
+
+## Context
+
+Fixes 1-4 for the SQLite memory leak are already implemented on this branch. The hardcoded defaults (200MB cache per connection, 1GB soft heap limit) are conservative. On the production server with 512GB RAM, these could be tuned higher for better query performance. Additionally, `RepositoryConfig` and `SetConfig()` exist but are **never wired up** — there's currently no way to override any re...
+
+### Prompt 2
+
+Also add a section in the README.md discussing and documenting the new db options.
+
+### Prompt 3
+
+Why is the option cache-size-mb set to DB size / max-open-connections and not to DB size. Why does this allow to hold the complete DB in memory when the cache size is smaller than the total DB?
+
+### Prompt 4
+
+Yes please add a clarification to the README
+

52/552d244fc5/0/metadata.json

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52/552d244fc5/0/prompt.txt

@@ -0,0 +1,200 @@
+Implement the following plan:
+
+# Make SQLite Memory Limits Configurable via config.json
+
+## Context
+
+Fixes 1-4 for the SQLite memory leak are already implemented on this branch. The hardcoded defaults (200MB cache per connection, 1GB soft heap limit) are conservative. On the production server with 512GB RAM, these could be tuned higher for better query performance. Additionally, `RepositoryConfig` and `SetConfig()` exist but are **never wired up** — there's currently no way to override any repository defaults from config.json.
+
+## Current State (already implemented on this branch)
+
+- `_cache_size = -200000` (200MB per connection, hardcoded) — **too low for 80GB DB, will be made configurable**
+- `soft_heap_limit = 1073741824` (1GB process-wide, hardcoded) — **too low, will be made configurable**
+- `ConnectionMaxIdleTime = 10 * time.Minute` (hardcoded default)
+- `MaxOpenConnections = 4` (hardcoded default)
+- Context propagation to all query call sites (already done)
+
+## Problem
+
+`repository.SetConfig()` exists but is never called from `main.go`. The `initDatabase()` function (line 110) just calls `repository.Connect(config.Keys.DB)` directly. There's no `"db-config"` section in `ProgramConfig` or the JSON schema.
+
+## Proposed Changes
+
+### 1. Add SQLite memory fields to `RepositoryConfig`
+
+**File:** `internal/repository/config.go`
+
+Add two new fields with sensible defaults:
+
+```go
+type RepositoryConfig struct {
+    // ... existing fields ...
+
+    // DbCacheSizeMB is the SQLite page cache size per connection in MB.
+    // Uses negative PRAGMA cache_size notation (KiB). With MaxOpenConnections=4
+    // and DbCacheSizeMB=200, total page cache is up to 800MB.
+    // Default: 200 (MB)
+    DbCacheSizeMB int
+
+    // DbSoftHeapLimitMB is the process-wide SQLite soft heap limit in MB.
+    // SQLite will try to release cache pages to stay under this limit.
+    // It's a soft limit — queries won't fail, but cache eviction becomes more aggressive.
+    // Default: 1024 (1GB)
+    DbSoftHeapLimitMB int
+}
+```
+
+Update `DefaultConfig()`:
+```go
+DbCacheSizeMB:     2048,  // 2GB per connection
+DbSoftHeapLimitMB: 16384, // 16GB process-wide
+```
+
+**Rationale for defaults:** With an 80GB production database on a 512GB server, we want the cache to hold a significant portion of the DB. At 4 connections × 2GB = 8GB default page cache, plus 16GB soft heap limit. The previous 200MB/1GB hardcoded values were too conservative and would hurt query performance by forcing excessive cache eviction. These defaults use ~5% of a 512GB server — still safe for smaller machines, while enabling good performance on production.
+
+### 2. Use config values in `Connect()` and `setupSqlite()`
+
+**File:** `internal/repository/dbConnection.go`
+
+In `Connect()`, replace the hardcoded cache_size:
+```go
+cacheSizeKiB := repoConfig.DbCacheSizeMB * 1024  // Convert MB to KiB
+connectionURLParams.Add("_cache_size", fmt.Sprintf("-%d", cacheSizeKiB))
+```
+
+Change `setupSqlite()` to accept the config and use it for soft_heap_limit:
+```go
+func setupSqlite(db *sql.DB, cfg *RepositoryConfig) error {
+    pragmas := []string{
+        "temp_store = memory",
+        fmt.Sprintf("soft_heap_limit = %d", cfg.DbSoftHeapLimitMB*1024*1024),
+    }
+    // ...
+}
+```
+
+Update the call site in `Connect()`:
+```go
+err = setupSqlite(dbHandle.DB, &opts)  // was: setupSqlite(dbHandle.DB)
+```
+
+### 3. Add `"db-config"` section to `ProgramConfig` and JSON schema
+
+**File:** `internal/config/config.go`
+
+Add a new struct and field to `ProgramConfig`:
+
+```go
+type DbConfig struct {
+    CacheSizeMB       int `json:"cache-size-mb"`
+    SoftHeapLimitMB   int `json:"soft-heap-limit-mb"`
+    MaxOpenConnections int `json:"max-open-connections"`
+    MaxIdleConnections int `json:"max-idle-connections"`
+    ConnectionMaxIdleTimeMins int `json:"max-idle-time-minutes"`
+}
+
+type ProgramConfig struct {
+    // ... existing fields ...
+    DbConfig *DbConfig `json:"db-config"`
+}
+```
+
+**File:** `internal/config/schema.go`
+
+Add the schema section for validation.
+
+### 4. Wire `SetConfig()` in `initDatabase()`
+
+**File:** `cmd/cc-backend/main.go`
+
+```go
+func initDatabase() error {
+    if config.Keys.DbConfig != nil {
+        cfg := repository.DefaultConfig()
+        dc := config.Keys.DbConfig
+        if dc.CacheSizeMB > 0 {
+            cfg.DbCacheSizeMB = dc.CacheSizeMB
+        }
+        if dc.SoftHeapLimitMB > 0 {
+            cfg.DbSoftHeapLimitMB = dc.SoftHeapLimitMB
+        }
+        if dc.MaxOpenConnections > 0 {
+            cfg.MaxOpenConnections = dc.MaxOpenConnections
+        }
+        if dc.MaxIdleConnections > 0 {
+            cfg.MaxIdleConnections = dc.MaxIdleConnections
+        }
+        if dc.ConnectionMaxIdleTimeMins > 0 {
+            cfg.ConnectionMaxIdleTime = time.Duration(dc.ConnectionMaxIdleTimeMins) * time.Minute
+        }
+        repository.SetConfig(cfg)
+    }
+    repository.Connect(config.Keys.DB)
+    return nil
+}
+```
+
+### 5. Log effective values on startup
+
+**File:** `internal/repository/dbConnection.go`
+
+After setting PRAGMAs, log the effective values so operators can verify:
+```go
+cclog.Infof("SQLite config: cache_size=%dMB/conn, soft_heap_limit=%dMB, max_conns=%d",
+    repoConfig.DbCacheSizeMB, repoConfig.DbSoftHeapLimitMB, repoConfig.MaxOpenConnections)
+```
+
+## Example config.json (for 512GB server with 80GB database)
+
+```json
+{
+  "main": {
+    "db": "./var/job.db",
+    "db-config": {
+      "cache-size-mb": 16384,
+      "soft-heap-limit-mb": 131072,
+      "max-open-connections": 8,
+      "max-idle-time-minutes": 30
+    }
+  }
+}
+```
+
+This would give: 8 connections × 16GB cache = 128GB max page cache, with a 128GB soft heap limit. The entire 80GB database can be cached in memory. On a 512GB server that's ~25% of RAM.
+
+**Sizing guidance (for documentation):**
+- `cache-size-mb`: Set to `DB_size / max-open-connections` to allow the entire DB to be cached. E.g., 80GB DB with 8 connections → 10GB per connection minimum.
+- `soft-heap-limit-mb`: Set to total desired SQLite memory budget. Should be ≥ `cache-size-mb × max-open-connections` to avoid cache thrashing.
+
+## Files to Modify
+
+| File | Changes |
+|------|---------|
+| `internal/repository/config.go` | Add `DbCacheSizeMB`, `DbSoftHeapLimitMB` fields + defaults |
+| `internal/repository/dbConnection.go` | Use config values instead of hardcoded; pass config to `setupSqlite`; add startup log |
+| `internal/config/config.go` | Add `DbConfig` struct and field to `ProgramConfig` |
+| `internal/config/schema.go` | Add `"db-config"` JSON schema section |
+| `cmd/cc-backend/main.go` | Wire `SetConfig()` in `initDatabase()` |
+
+## Verification
+
+1. `go build ./...` — compiles
+2. `go test ./internal/repository/... ./internal/config/...` — tests pass
+3. Without `db-config` in config.json: defaults apply (200MB cache, 1GB heap) — backwards compatible
+4. With `db-config`: verify with `PRAGMA cache_size;` and `PRAGMA soft_heap_limit;` in sqlite3 CLI
+5. Check startup log shows effective values
+
+
+If you need specific details from before exiting plan mode (like exact code snippets, error messages, or content you generated), read the full transcript at: /Users/jan/.claude/projects/-Users-jan-prg-CC-cc-backend/520afa6a-6a70-437b-96c1-35c40ed3ec48.jsonl
+
+---
+
+Also add a section in the README.md discussing and documenting the new db options.
+
+---
+
+Why is the option cache-size-mb set to DB size / max-open-connections and not to DB size. Why does this allow to hold the complete DB in memory when the cache size is smaller than the total DB?
+
+---
+
+Yes please add a clarification to the README

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+    "cache_creation_tokens": 37743,
+    "cache_read_tokens": 170418,
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+  },
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+}

9e/c86e3669e1/0/prompt.txt

@@ -0,0 +1,5 @@
+What is the default for EnableJobTaggers if the option is not set in the config file?
+
+---
+
+Currently a segvault occurs when the option enable-job-taggers is set to true but the tagger rules directories are missing. Analyse the problem and fix it.

9e/c86e3669e1/metadata.json

@@ -0,0 +1,25 @@
+{
+  "cli_version": "0.5.0",
+  "checkpoint_id": "9ec86e3669e1",
+  "strategy": "manual-commit",
+  "branch": "hotfix",
+  "checkpoints_count": 1,
+  "files_touched": [
+    "internal/tagger/tagger.go"
+  ],
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+    {
+      "metadata": "/9e/c86e3669e1/0/metadata.json",
+      "transcript": "/9e/c86e3669e1/0/full.jsonl",
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+}

9f/282c3d9570/0/content_hash.txt

@@ -0,0 +1 @@
+sha256:213e6a5eed44edc1f74819bc5479813b193d8ed4406cbf21f1a2e984aea2d811

9f/282c3d9570/0/metadata.json

@@ -0,0 +1,34 @@
+{
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+  "session_id": "33b625ac-af8f-4396-9483-775293f983e5",
+  "strategy": "manual-commit",
+  "created_at": "2026-03-13T05:23:33.419171Z",
+  "branch": "hotfix",
+  "checkpoints_count": 1,
+  "files_touched": [
+    "ReleaseNotes.md"
+  ],
+  "agent": "Claude Code",
+  "model": "claude-opus-4-6",
+  "turn_id": "185a21736331",
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9f/282c3d9570/0/prompt.txt

@@ -0,0 +1 @@
+Update the releasenotes with the recent changes

9f/282c3d9570/metadata.json

@@ -0,0 +1,25 @@
+{
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+}

a3/dba4105838/0/content_hash.txt

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+sha256:b99c9b469fa38a87819748fa634a401dfd0c2b14393b77824abc59c9e0f5dcec

a3/dba4105838/0/metadata.json

@@ -0,0 +1,35 @@
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+  "strategy": "manual-commit",
+  "created_at": "2026-03-13T16:14:14.321305Z",
+  "branch": "hotfix",
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+    "internal/repository/migrations/sqlite3/14_running-partial-indexes.down.sql",
+    "internal/repository/migrations/sqlite3/14_running-partial-indexes.up.sql"
+  ],
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+}

a3/dba4105838/0/prompt.txt

@@ -0,0 +1 @@
+Does it make sense to also inline the literal state value in other places?

a3/dba4105838/1/content_hash.txt

@@ -0,0 +1 @@
+sha256:0b40826e7652510d381b025590cc563f66e18f4589aee9f6143040a10c50195c

a3/dba4105838/1/metadata.json

@@ -0,0 +1,41 @@
+{
+  "cli_version": "0.5.0",
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+  "session_id": "d7b38bc2-9c86-403c-95ee-c10284ffa933",
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+  "branch": "hotfix",
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+    "internal/repository/migrations/sqlite3/11_optimize-indexes.down.sql",
+    "internal/repository/migrations/sqlite3/11_optimize-indexes.up.sql",
+    "internal/repository/migrations/sqlite3/12_stats-covering-index.down.sql",
+    "internal/repository/migrations/sqlite3/12_stats-covering-index.up.sql",
+    "internal/repository/migrations/sqlite3/13_status-covering-indexes.down.sql",
+    "internal/repository/migrations/sqlite3/13_status-covering-indexes.up.sql",
+    "internal/repository/migrations/sqlite3/14_running-partial-indexes.down.sql",
+    "internal/repository/migrations/sqlite3/14_running-partial-indexes.up.sql"
+  ],
+  "agent": "Claude Code",
+  "turn_id": "60e552ef621e",
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+}

a3/dba4105838/1/prompt.txt

@@ -0,0 +1 @@
+Consolidate all migrations after 10 to one migration 11.

a3/dba4105838/metadata.json

@@ -0,0 +1,39 @@
+{
+  "cli_version": "0.5.0",
+  "checkpoint_id": "a3dba4105838",
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+  "branch": "hotfix",
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+    "internal/repository/migration.go",
+    "internal/repository/migrations/sqlite3/11_optimize-indexes.down.sql",
+    "internal/repository/migrations/sqlite3/11_optimize-indexes.up.sql",
+    "internal/repository/migrations/sqlite3/12_stats-covering-index.down.sql",
+    "internal/repository/migrations/sqlite3/12_stats-covering-index.up.sql",
+    "internal/repository/migrations/sqlite3/13_status-covering-indexes.down.sql",
+    "internal/repository/migrations/sqlite3/13_status-covering-indexes.up.sql",
+    "internal/repository/migrations/sqlite3/14_running-partial-indexes.down.sql",
+    "internal/repository/migrations/sqlite3/14_running-partial-indexes.up.sql"
+  ],
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+}

af/7afc9a29ff/0/content_hash.txt

@@ -0,0 +1 @@
+sha256:2acb0c920c03e15d278d2ceab4ca80e35ae17c4c587ab7ee35844144cac5e341

af/7afc9a29ff/0/context.md

@@ -0,0 +1,16 @@
+# Session Context
+
+## User Prompts
+
+### Prompt 1
+
+Implement the following plan:
+
+# Optimize Job Table Indexes for 20M Row Production Database
+
+## Context
+
+The `job` table has **79 indexes** (created in migrations 08/09), causing:
+1. **Wrong index selection** — without `ANALYZE` statistics, SQLite picks wrong indexes (e.g., `jobs_jobstate_energy` instead of `jobs_starttime` for ORDER BY queries), causing full-table temp B-tree sorts on 20M rows → timeouts
+2. **Excessive disk/memory overhead** — each index costs ~200-400MB at 20M rows; 79 inde...
+

af/7afc9a29ff/0/metadata.json

@@ -0,0 +1,32 @@
+{
+  "cli_version": "0.4.8",
+  "checkpoint_id": "af7afc9a29ff",
+  "session_id": "c31c699a-f492-48f7-bcf0-35d3ceeac243",
+  "strategy": "manual-commit",
+  "created_at": "2026-03-11T04:46:04.68213Z",
+  "branch": "optimize-db-indices",
+  "checkpoints_count": 1,
+  "files_touched": [
+    "internal/repository/migration.go",
+    "internal/repository/migrations/sqlite3/11_optimize-indexes.down.sql",
+    "internal/repository/migrations/sqlite3/11_optimize-indexes.up.sql"
+  ],
+  "agent": "Claude Code",
+  "turn_id": "93c57808e96c",
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+  },
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+    "human_removed": 0,
+    "total_committed": 551,
+    "agent_percentage": 69.87295825771325
+  }
+}

af/7afc9a29ff/0/prompt.txt

@@ -0,0 +1,139 @@
+Implement the following plan:
+
+# Optimize Job Table Indexes for 20M Row Production Database
+
+## Context
+
+The `job` table has **79 indexes** (created in migrations 08/09), causing:
+1. **Wrong index selection** — without `ANALYZE` statistics, SQLite picks wrong indexes (e.g., `jobs_jobstate_energy` instead of `jobs_starttime` for ORDER BY queries), causing full-table temp B-tree sorts on 20M rows → timeouts
+2. **Excessive disk/memory overhead** — each index costs ~200-400MB at 20M rows; 79 indexes = ~16-32GB wasted
+3. **Slower writes** — every INSERT/UPDATE touches all 79 indexes
+4. **Planner confusion** — too many similar indexes make the query planner's cost estimation unreliable
+
+The `ANALYZE` fix (already added to `setupSqlite` in `dbConnection.go`) resolves the planner issue with current indexes, but the index count must be reduced for disk/write performance.
+
+## Approach: Reduce to 20 indexes
+
+The key insight from query plan analysis: with `ANALYZE` and `LIMIT`, a `(filter_col, sort_col)` index is often better than `(filter_col1, filter_col2, sort_col)` because SQLite can scan the index in sort order and cheaply filter non-matching rows, stopping at LIMIT.
+
+### Verified query plans (with ANALYZE, after this change)
+
+| # | Pattern | Index Used | Plan |
+|---|---------|-----------|------|
+| 1 | Multi-state IN + ORDER BY start_time LIMIT | `jobs_starttime` | SCAN (index order, no sort) |
+| 2 | cluster + state + sort start_time | `jobs_cluster_starttime_duration` | SEARCH |
+| 3 | hpc_user + sort start_time | `jobs_user_starttime_duration` | SEARCH |
+| 4 | cluster + state aggregation | `jobs_cluster_jobstate_duration_starttime` | COVERING SEARCH |
+| 5 | Unique lookup (job_id,cluster,start_time) | `sqlite_autoindex_job_1` | SEARCH |
+| 6 | Running jobs for cluster + duration > | `jobs_cluster_jobstate_duration_starttime` | SEARCH |
+| 7 | start_time BETWEEN range | `jobs_starttime` | SEARCH |
+| 8 | GROUP BY user with cluster | `jobs_cluster_user` | COVERING SEARCH |
+| 9 | Concurrent jobs (cluster + start_time <) | `jobs_cluster_starttime_duration` | SEARCH |
+| 10 | project IN + state IN + sort | `jobs_jobstate_project` | SEARCH + temp sort |
+| 11 | user + multi-state + sort start_time | `jobs_user_starttime_duration` | SEARCH |
+| 12 | cluster + state + sort duration | `jobs_cluster_jobstate_duration_starttime` | SEARCH |
+| 13 | cluster + state + sort num_nodes | `jobs_cluster_numnodes` | SEARCH (state filtered per-row) |
+| 14 | Tag join | `tags_tagid` + PK | SEARCH |
+| 15 | Delete before timestamp | `jobs_starttime` | COVERING SEARCH |
+| 16 | Non-running jobs (GetJobList) | `jobs_jobstate_duration_starttime` | COVERING SCAN |
+
+## Changes Required
+
+### File: `internal/repository/migrations/sqlite3/11_optimize-indexes.up.sql` (new)
+
+```sql
+-- Drop all 77 job indexes from migration 09 (sqlite_autoindex_job_1 is UNIQUE, kept)
+-- Then create optimized set of 20
+
+-- GROUP 1: Global (1 index)
+-- #1 jobs_starttime (start_time)
+--    Default sort for unfiltered/multi-state queries, time range, delete-before
+
+-- GROUP 2: Cluster-prefixed (8 indexes)
+-- #2 jobs_cluster_starttime_duration (cluster, start_time, duration)
+--    Cluster + default sort, concurrent jobs, time range within cluster
+-- #3 jobs_cluster_duration_starttime (cluster, duration, start_time)
+--    Cluster + sort by duration
+-- #4 jobs_cluster_jobstate_duration_starttime (cluster, job_state, duration, start_time)
+--    COVERING for cluster+state aggregation; running jobs (cluster, state, duration>?)
+-- #5 jobs_cluster_jobstate_starttime_duration (cluster, job_state, start_time, duration)
+--    Cluster+state+sort start_time (single state equality)
+-- #6 jobs_cluster_user (cluster, hpc_user)
+--    COVERING for GROUP BY user with cluster filter
+-- #7 jobs_cluster_project (cluster, project)
+--    GROUP BY project with cluster filter
+-- #8 jobs_cluster_subcluster (cluster, subcluster)
+--    GROUP BY subcluster with cluster filter
+-- #9 jobs_cluster_numnodes (cluster, num_nodes)
+--    Cluster + sort by num_nodes (state filtered per-row, fast with LIMIT)
+
+-- GROUP 3: User-prefixed (1 index)
+-- #10 jobs_user_starttime_duration (hpc_user, start_time, duration)
+--     Security filter (user role) + default sort
+
+-- GROUP 4: Project-prefixed (1 index)
+-- #11 jobs_project_starttime_duration (project, start_time, duration)
+--     Security filter (manager role) + default sort
+
+-- GROUP 5: JobState-prefixed (3 indexes)
+-- #12 jobs_jobstate_project (job_state, project)
+--     State + project filter (for manager security within state query)
+-- #13 jobs_jobstate_user (job_state, hpc_user)
+--     State + user filter/aggregation
+-- #14 jobs_jobstate_duration_starttime (job_state, duration, start_time)
+--     COVERING for non-running jobs scan, state + sort duration
+
+-- GROUP 6: Rare filters (1 index)
+-- #15 jobs_arrayjobid (array_job_id)
+--     Array job lookup (rare but must be indexed)
+
+-- GROUP 7: Secondary sort columns (5 indexes)
+-- #16 jobs_cluster_numhwthreads (cluster, num_hwthreads)
+-- #17 jobs_cluster_numacc (cluster, num_acc)
+-- #18 jobs_cluster_energy (cluster, energy)
+-- #19 jobs_cluster_partition_starttime (cluster, cluster_partition, start_time)
+--     Cluster+partition + sort start_time
+-- #20 jobs_cluster_partition_jobstate (cluster, cluster_partition, job_state)
+--     Cluster+partition+state filter
+```
+
+### What's dropped and why (59 indexes removed)
+
+| Category | Count | Why redundant |
+|----------|-------|---------------|
+| cluster+partition sort/filter variants | 8 | Kept only 2 partition indexes (#19, #20); rest use cluster indexes + row filter |
+| cluster+shared (all) | 8 | `shared` is rare; cluster index + row filter is fast |
+| shared-prefixed (all) | 8 | `shared` alone is never a leading filter |
+| cluster+jobstate sort variants (numnodes, hwthreads, acc, energy) | 4 | Replaced by `(cluster, sort_col)` indexes which work for any state combo with LIMIT |
+| user sort variants (numnodes, hwthreads, acc, energy, duration) | 5 | User result sets are small; temp sort is fast |
+| project sort variants + project_user | 6 | Same reasoning as user |
+| jobstate sort variants (numnodes, hwthreads, acc, energy) | 4 | State has low cardinality; cluster+sort indexes handle these |
+| single-filter+starttime (5) + single-filter+duration (5) | 10 | Queries always have cluster/user/project filter; standalone rare |
+| standalone duration | 1 | Covered by cluster_duration_starttime |
+| duplicate arrayjob variants | 1 | Simplified to single-column (array_job_id) |
+| redundant cluster_starttime variants | 2 | Consolidated into 2 cluster+time indexes |
+| cluster_jobstate_user, cluster_jobstate_project | 2 | Covered by cluster_user/cluster_project + state row filter |
+
+### File: `internal/repository/migrations/sqlite3/11_optimize-indexes.down.sql` (new)
+
+Recreate all 77 indexes from migration 09 for safe rollback.
+
+### File: `internal/repository/migration.go`
+
+Increment `Version` from `10` to `11`.
+
+## Verification
+
+1. `go build ./...` — compiles
+2. `go test ./internal/repository/...` — tests pass
+3. `cc-backend -migrate-db` on a test copy of production DB
+4. After migration, run `ANALYZE;` then verify all 16 query plans match the table above using:
+   ```sql
+   EXPLAIN QUERY PLAN SELECT * FROM job WHERE job.job_state IN ('completed','running','failed') ORDER BY job.start_time DESC LIMIT 50;
+   -- Should show: SCAN job USING INDEX jobs_starttime
+   ```
+5. Verify index count: `SELECT COUNT(*) FROM sqlite_master WHERE type='index' AND tbl_name='job';` → should be 21 (20 + autoindex)
+6. Compare DB file size before/after (expect ~70% reduction in index overhead)
+
+
+If you need specific details from before exiting plan mode (like exact code snippets, error messages, or content you generated), read the full transcript at: /Users/jan/.claude/projects/-Users-jan-prg-CC-cc-backend/42401d2e-7d1c-4c0e-abe6-356cb2d48747.jsonl

af/7afc9a29ff/metadata.json

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+{
+  "cli_version": "0.4.8",
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+  "branch": "optimize-db-indices",
+  "checkpoints_count": 1,
+  "files_touched": [
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+    "internal/repository/migrations/sqlite3/11_optimize-indexes.down.sql",
+    "internal/repository/migrations/sqlite3/11_optimize-indexes.up.sql"
+  ],
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+      "content_hash": "/af/7afc9a29ff/0/content_hash.txt",
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+    }
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+  }
+}

b3/8dc35e5334/0/content_hash.txt

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b3/8dc35e5334/0/metadata.json

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+  "branch": "hotfix",
+  "checkpoints_count": 1,
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+    "pkg/metricstore/config.go",
+    "pkg/metricstore/walCheckpoint.go"
+  ],
+  "agent": "Claude Code",
+  "turn_id": "cdfce90402f4",
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+  },
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+}

b3/8dc35e5334/0/prompt.txt

@@ -0,0 +1 @@
+commit the changes

b3/8dc35e5334/1/content_hash.txt

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+sha256:233546e675fe3dad92455d912c29157e9ece1798355f14b7ecd8a262e6eb5017

b3/8dc35e5334/1/metadata.json

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b3/8dc35e5334/1/prompt.txt

@@ -0,0 +1 @@
+What about the other Improvements. Which ones do you recommend

b3/8dc35e5334/metadata.json

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+      "prompt": "/b3/8dc35e5334/0/prompt.txt"
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b6/8850c6fcff/0/content_hash.txt

@@ -0,0 +1 @@
+sha256:ac54f34657fe5e981973ec91ba0f27f7e43ecd422a15c3486029bebdfa94f8a3

b6/8850c6fcff/0/metadata.json

@@ -0,0 +1,33 @@
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+  "branch": "hotfix",
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+  "agent": "Claude Code",
+  "turn_id": "2ed358a05d36",
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b6/8850c6fcff/metadata.json

@@ -0,0 +1,25 @@
+{
+  "cli_version": "0.5.0",
+  "checkpoint_id": "b68850c6fcff",
+  "strategy": "manual-commit",
+  "branch": "hotfix",
+  "checkpoints_count": 1,
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+      "prompt": ""
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+}

ba/ed7fbee099/0/content_hash.txt

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+sha256:8f6b5f34cbd08130b01cc9e0927b9ca60347fd793ca55e9d1eb680407ab63b90

ba/ed7fbee099/0/metadata.json

@@ -0,0 +1,34 @@
+{
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+  "checkpoint_id": "baed7fbee099",
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+  "branch": "hotfix",
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+  "agent": "Claude Code",
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ba/ed7fbee099/0/prompt.txt

@@ -0,0 +1 @@
+Update ReleaseNotes and set correct latest Migration

ba/ed7fbee099/metadata.json

@@ -0,0 +1,25 @@
+{
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+      "prompt": "/ba/ed7fbee099/0/prompt.txt"
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c1/1d1a65fae4/0/content_hash.txt

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+sha256:0570a6331159d6987033977b4057bbb4bedb032475f2294519d8318eb5c818e8

c1/1d1a65fae4/0/metadata.json

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+    "pkg/metricstore/checkpoint.go",
+    "pkg/metricstore/configSchema.go",
+    "pkg/metricstore/healthcheck.go",
+    "pkg/metricstore/level.go",
+    "pkg/metricstore/metricstore.go",
+    "pkg/metricstore/stats.go"
+  ],
+  "agent": "Claude Code",
+  "turn_id": "cdfce90402f4",
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