dev-asterix · ric-v · Apr 28, 2026 · Apr 25, 2026 · Apr 28, 2026 · Apr 28, 2026
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,6 +5,18 @@ All notable changes to the PostgreSQL Explorer extension will be documented in t
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.2.2] - 2026-04-28
+
+### Added
+- **Sliding-window result streaming**: Optional PostgreSQL `SCROLL` cursor execution for eligible parameter-free `SELECT` queries (`postgresExplorer.performance.slidingWindowSelects`, default on). Keeps a bounded row buffer in the grid and extension host; scrolling fetches the next/previous window. Configurable cap via `postgresExplorer.performance.slidingWindowRowCap` (10–500 rows). Dismissible streaming hint banner with optional mute for the session/workspace.
+- **`bytea` display modes**: Setting `postgresExplorer.query.byteaDisplayFormat` — `hex0x` (default), PostgreSQL `\x` hex text, or JSON-oriented debug shape — applied consistently in result grids and history.
+- **SQL Assistant turn controls**: Regenerate the latest assistant reply without duplicating the user turn; resend / branch from a chosen user message (truncate history after that turn and rerun). Attach-to-assistant flows can prefill the composer when a message string is supplied (toast copy updated accordingly).
+- **Result grid toolbar & editing workflow**: Result identity bar, consolidated toolbar/footer, view selector, inline banners, and a commit-confirmation step for pending cell edits. Source notebook cell index is surfaced for returning focus to the executing cell.
+
+### Changed
+- **Export vs Auto-LIMIT**: Query results carry `exportQuery` (original SQL before Auto-LIMIT) so full CSV/JSON/Excel exports can rerun the unrestricted statement when the grid was limited for display.
+- **Renderer & executor integration**: Server-side cursor sessions coordinate with the webview for windowed fetches; grid-derived queries and edit-commit preferences are handled in the extension host so UI actions stay consistent with execution policy.
+
 ## [1.2.0] - 2026-04-19
 
 ### Added

diff --git a/MARKETPLACE.md b/MARKETPLACE.md
@@ -58,6 +58,9 @@
 | 🤖 **AI-Powered** | GitHub Copilot, GitHub Models, OpenAI, Anthropic, and Google Gemini integration |
 | ⌨️ **Developer Tools** | IntelliSense, keyboard shortcuts, PSQL terminal access |
 | 📤 **Export Data** | Export query results to CSV, JSON, or Excel formats |
+| 📉 **Large result streaming** | Optional sliding-window cursor mode for big `SELECT`s — bounded memory, scroll to fetch |
+| 🔢 **Binary columns** | Configurable `bytea` display (hex / PostgreSQL / JSON debug) |
+| 🤖 **SQL Assistant** | Regenerate last reply or resend from an earlier user message; prefill when attaching context |
 
 ---
 
@@ -123,7 +126,7 @@
 
 ## 📋 Feature Matrix
 
-| Area | PgStudio v1.0.0 | Notes |
+| Area | PgStudio v1.2.1 | Notes |
 |---|---|---|
 | Core PostgreSQL object operations | ✅ | Tables, views, mat views, functions, roles, extensions, FDWs, and more |
 | AI-assisted SQL workflows | ✅ | Generate, optimize, explain, analyze, and notebook handoff |
@@ -136,7 +139,7 @@
 
 ---
 
-## ⚠️ Known Limitations (v1.0.0)
+## ⚠️ Known Limitations (v1.2.1)
 
 - In-grid editing is currently more limited than full desktop DB IDEs.
 - ERD/schema visualization is available but not yet feature-complete.

diff --git a/README.md b/README.md
@@ -7,7 +7,7 @@
 [![Version](https://img.shields.io/visual-studio-marketplace/v/ric-v.postgres-explorer?style=for-the-badge&logo=visual-studio-code&logoColor=white&color=0066CC)](https://marketplace.visualstudio.com/items?itemName=ric-v.postgres-explorer)
 [![Downloads](https://img.shields.io/visual-studio-marketplace/d/ric-v.postgres-explorer?style=for-the-badge&logo=visual-studio-code&logoColor=white&color=2ECC71)](https://marketplace.visualstudio.com/items?itemName=ric-v.postgres-explorer)
 [![Rating](https://img.shields.io/visual-studio-marketplace/r/ric-v.postgres-explorer?style=for-the-badge&logo=visual-studio-code&logoColor=white&color=F39C12)](https://marketplace.visualstudio.com/items?itemName=ric-v.postgres-explorer)
-[![Status](https://img.shields.io/badge/status-stable%20v1.0.0%20%2B%20nightly-blue?style=for-the-badge&logo=git&logoColor=white)](https://github.com/dev-asterix/PgStudio/releases)
+[![Status](https://img.shields.io/badge/status-stable%20v1.2.1%20%2B%20nightly-blue?style=for-the-badge&logo=git&logoColor=white)](https://github.com/dev-asterix/PgStudio/releases)
 
 **PgStudio** (formerly YAPE) is a comprehensive PostgreSQL database management extension featuring interactive SQL notebooks, real-time monitoring dashboard, AI-powered assistance, and advanced database operations—all within VS Code.
 
@@ -17,13 +17,6 @@
 
 ---
 
-## 🆕 Since v1.0.0
-
-- 🧩 **SQL Assistant in Editor Tabs** — Open SQL Assistant directly in the main editor area using `SQL Assistant: Open in Editor Tab`.
-- 🗂️ **Multiple SQL Assistant Tabs** — Run parallel assistant conversations in separate tabs and switch context faster.
-
----
-
 ## 📺 Video Guides
 
 ### 1. Setup
@@ -71,10 +64,10 @@
 - 📋 **Smart Paste** — Context-aware clipboard actions (SQL/CSV/JSON)
 - 📊 **Table Intelligence** — Profile, activity monitor, index usage, definition viewer
 - 🔍 **EXPLAIN CodeLens** — One-click query analysis directly in notebooks
-- 🎛️ **Advanced Result UX** — Column stats, transpose view, enhanced filtering, and improved in-grid editing controls
+- 🎛️ **Advanced Result UX** — Column stats, transpose view, enhanced filtering, sliding-window streaming for large `SELECT`s, configurable `bytea` display, and structured in-grid editing with explicit commit confirmation
 - 🛡️ **Auto-LIMIT** — Intelligent query protection (configurable, default 1000 rows)
 - 🌍 **Foreign Data Wrappers** — Manage foreign servers, user mappings & tables
-- 🤖 **AI-Powered** — Generate, Optimize, Explain & Analyze with guided follow-ups and next-step suggestions (GitHub Models, OpenAI, Anthropic, Gemini, VS Code LM)
+- 🤖 **AI-Powered** — Generate, Optimize, Explain & Analyze with guided follow-ups; regenerate or branch the conversation from a prior user message (GitHub Models, OpenAI, Anthropic, Gemini, VS Code LM)
 - 🧩 **Flexible SQL Assistant Layout** — Open SQL Assistant in editor tabs and keep multiple assistant tabs open simultaneously
 - 🖼️ **Vision AI** — Paste or upload images directly in the SQL Assistant; sent to vision-capable AI providers
 - 📎 **File Preview** — Click attached file chips to open them as preview tabs in the editor
@@ -135,27 +128,19 @@
 
 ## 📋 Feature Matrix
 
-| Area | PgStudio v1.0.0 | Notes |
+| Area | PgStudio v1.2.1 | Notes |
 |---|---|---|
 | Core PostgreSQL object operations | ✅ | Tables, views, mat views, functions, roles, extensions, FDWs, and more |
 | AI-assisted SQL workflows | ✅ | Generate, optimize, explain, and analyze with notebook-first execution |
 | Production safety controls | ✅ | Read-only mode, risk scoring, confirmation prompts, Auto-LIMIT |
 | Real-time monitoring dashboard | ✅ | Activity and health views in VS Code |
 | Interactive SQL notebooks | ✅ | Native `.pgsql` notebook execution with completions |
-| In-grid result editing parity with desktop IDEs | ⚠️ Partial | Planned improvements post-v1.0.0 |
+| In-grid result editing parity with desktop IDEs | ⚠️ Partial | Stronger commit flow and tooling in v1.2.x; full parity still evolving |
 | ERD/schema visualization parity | ⚠️ Partial | Schema designer exists; ERD depth still evolving |
 | Advanced replication administration | ⚠️ Partial | Additional publication/subscription depth planned |
 
 ---
 
-## ⚠️ Known Limitations (v1.0.0)
-
-- In-grid editing is limited compared to full desktop DB IDEs.
-- ERD/schema visualization is still maturing.
-- Some advanced PostgreSQL administration areas are partial and will be expanded in v1.x.
-
----
-
 ## 🚀 Quick Start
 
 ```bash
@@ -184,7 +169,7 @@ Then: **PostgreSQL icon** → **Add Connection** → Enter details → **Connect
 - `SECURITY.md` - Security policy and vulnerability reporting guidance
 - `CHANGELOG.md` - Release notes and what changed across versions
 
-**Stable: v1.0.0 | Nightly: v1.0.0-nightly+ —** Production-ready stable release plus active nightly improvements (dashboard telemetry UX and SQL Preview toggle workflows). See [Release Notes](docs/RELEASE_NOTES_v1.0.0.md), [Migration Guide](docs/MIGRATION_GUIDE_0.x_to_1.0.0.md), and [CHANGELOG.md](CHANGELOG.md) for details.
+**Stable: v1.2.1 | Nightly: v1.0.0-nightly+ —** Latest stable adds cursor-based result streaming, `bytea` formatting controls, richer result-grid tooling, export correctness with Auto-LIMIT, and SQL Assistant regenerate/resend. See [CHANGELOG.md](CHANGELOG.md); v1.0 launch materials remain in [Release Notes](docs/RELEASE_NOTES_v1.0.0.md) and [Migration Guide](docs/MIGRATION_GUIDE_0.x_to_1.0.0.md).
 
 ---
 

diff --git a/docs/assets/01-setup.gif b/docs/assets/01-setup.gif
diff --git a/docs/assets/02-more-settings.gif b/docs/assets/02-more-settings.gif
diff --git a/docs/assets/03-ai-assist.gif b/docs/assets/03-ai-assist.gif
diff --git a/docs/assets/04-ai-copilot.gif b/docs/assets/04-ai-copilot.gif
diff --git a/docs/assets/05-dashboard.gif b/docs/assets/05-dashboard.gif
diff --git a/docs/assets/07-power-editor.gif b/docs/assets/07-power-editor.gif
diff --git a/docs/assets/08-more-features.gif b/docs/assets/08-more-features.gif
diff --git a/package.json b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "postgres-explorer",
   "displayName": "PgStudio (PostgreSQL Explorer)",
-  "version": "1.2.1",
+  "version": "1.2.2",
   "description": "PostgreSQL database explorer for VS Code with notebook support [Nightly]",
   "publisher": "ric-v",
   "private": false,
@@ -1751,11 +1751,33 @@
           "default": 1000,
           "description": "Default row limit for SELECT queries when auto-LIMIT is enabled."
         },
+        "postgresExplorer.performance.slidingWindowSelects": {
+          "type": "boolean",
+          "default": true,
+          "description": "Use a PostgreSQL SCROLL cursor for eligible SELECT queries (no SQL parameters): stream one window of rows into the cell and fetch more on scroll—bounded RAM on host and webview."
+        },
+        "postgresExplorer.performance.slidingWindowRowCap": {
+          "type": "number",
+          "default": 100,
+          "minimum": 10,
+          "maximum": 500,
+          "description": "Maximum rows kept in the result grid at once when sliding-window streaming is active."
+        },
         "postgresExplorer.query.autoLimitEnabled": {
           "type": "boolean",
           "default": true,
           "description": "Automatically append LIMIT clause to SELECT queries that don't have one. Always enabled in read-only mode."
         },
+        "postgresExplorer.query.byteaDisplayFormat": {
+          "type": "string",
+          "enum": [
+            "hex0x",
+            "postgresql",
+            "json"
+          ],
+          "default": "hex0x",
+          "description": "Display format for binary (bytea) columns in query results: 0x-prefixed hex, PostgreSQL \\x hex, or JSON Buffer shape (debug)."
+        },
         "postgresExplorer.parameters.cacheLastValues": {
           "type": "boolean",
           "default": true,

diff --git a/src/common/types.ts b/src/common/types.ts
@@ -90,6 +90,11 @@ export interface BreadcrumbContext {
   };
 }
 
+/** How decoded `bytea` / binary values are shown in query result grids */
+export type ByteaDisplayFormat = 'hex0x' | 'postgresql' | 'json';
+
+export const BYTEA_DISPLAY_DEFAULT: ByteaDisplayFormat = 'hex0x';
+
 /** PostgreSQL notice with client receive time (log-style UI) */
 export interface NoticeLogEntry {
   message: string;
@@ -103,6 +108,8 @@ export interface QueryResults {
   rowCount?: number | null;
   command?: string;
   query?: string;
+  /** Raw query before auto-LIMIT; used by full export reruns. */
+  exportQuery?: string;
   notices?: NoticeLogEntry[];
   executionTime?: number;
   tableInfo?: TableInfo;
@@ -124,6 +131,20 @@ export interface QueryResults {
   autoLimitApplied?: boolean;
   /** Effective LIMIT value when autoLimitApplied is true. */
   autoLimitValue?: number;
+  /** Notebook setting: binary column display mode (embedded for renderer). */
+  byteaDisplayFormat?: ByteaDisplayFormat;
+  /** Server-side cursor session: UI loads pages on scroll; keeps small row buffer client-side. */
+  slidingWindow?: {
+    sessionId: string;
+    windowStartRow: number;
+    windowSize: number;
+    hasMoreBefore: boolean;
+    hasMoreAfter: boolean;
+  };
+  /** When true with slidingWindow, show the streaming hint banner (policy-gated). */
+  showSlidingCursorBanner?: boolean;
+  /** Notebook cell index that produced this output (hover toolbar / focus source cell). */
+  sourceCellIndex?: number;
 }
 
 export interface TableRenderOptions {
@@ -144,6 +165,9 @@ export interface TableRenderOptions {
   onFkLookup?: (req: FkLookupRequest) => void;
   onFilterChange?: (filterState: FilterState) => void;
   onSortChange?: (sortState: SortState) => void;
+  byteaDisplayFormat?: ByteaDisplayFormat;
+  /** 1-based absolute row label for first visible row (sliding-window results). Defaults to 1. */
+  rowNumberBaseline?: number;
 }
 
 export interface ChartRenderOptions {
@@ -296,4 +320,5 @@ export interface ResultHistoryEntry {
   /** PostgreSQL notices (RAISE NOTICE, etc.) for this result */
   notices?: NoticeLogEntry[];
   timestamp: number;
+  byteaDisplayFormat?: ByteaDisplayFormat;
 }
diff --git a/src/extension.ts b/src/extension.ts
@@ -69,10 +69,12 @@ async function ensureRendererMessageHandlers(
     explainHandlersModule,
     coreHandlersModule,
     queryHandlersModule,
+    cursorBannerModule,
   ] = await Promise.all([
     import('./services/handlers/ExplainHandlers'),
     import('./services/handlers/CoreHandlers'),
     import('./services/handlers/QueryHandlers'),
+    import('./services/handlers/CursorStreamBannerHandler'),
   ]);
 
   // Explain & Chat Handlers
@@ -89,8 +91,12 @@ async function ensureRendererMessageHandlers(
   registry.register('showDatabaseSwitcher', new coreHandlersModule.ShowDatabaseSwitcherHandler(statusBarInstance));
   registry.register('showErrorMessage', new coreHandlersModule.ShowErrorMessageHandler());
   registry.register('export_request', new coreHandlersModule.ExportRequestHandler());
+  registry.register('runDerivedQuery', new coreHandlersModule.RunDerivedQueryHandler());
   registry.register('retryCell', new coreHandlersModule.RetryCellHandler());
   registry.register('showConnectionInfo', new coreHandlersModule.ShowConnectionInfoHandler());
+  registry.register('gridCommitPreference', new coreHandlersModule.GridCommitPreferenceHandler(context));
+  registry.register('cursorStreamBannerDismiss', new cursorBannerModule.CursorStreamBannerDismissHandler(context));
+  registry.register('cursorStreamBannerMute', new cursorBannerModule.CursorStreamBannerMuteHandler(context));
 
   // Query Execution Handlers
   registry.register('execute_update_background', new queryHandlersModule.ExecuteUpdateBackgroundHandler());