TLAH Studio 4.16.0

TLAH Studio 4.16.0

Version 4.16.0 gives every product surface—empty states, first-run, backgrounds, installer, and download page—a coherent Nocturne visual identity. All artwork is packaged locally and arrives through the normal signed update path; no reinstall is required.

Product surface identity

• Shared empty-state illustrations for selecting a chat, starting a conversation, and the Activity panel.
• Empty-conversation quick starts open Create & Research, fill a safe draft prompt, or open Settings without starting a run automatically.
• First-run setup opens with a welcome hero while keeping local API-key protection messaging intact.
• Five official background presets ship under Assets/Backgrounds and appear in Background settings with suggested opacity.
• Installer wizard brand images and a refreshed multi-resolution application icon.
• Download page hero art plus refreshed README overview artwork.
• Create & Research navigation thumbnails and an About dialog banner.

Update delivery

• Assets are included in the self-contained app package (Assets/**), so an in-app update replaces them with the new installer—no separate uninstall/reinstall step.
• Background preferences use a v2 storage format that preserves custom images from earlier versions while adding preset IDs.

Validation

• Release CI still runs the NuGet vulnerability audit, xUnit suite, coverage floors, and warning-free x64 App/Updater builds.
• Publish verification requires logo size, empty-state art, onboarding hero, five presets, workbench art, EmptyState XBF, and installer wizard bitmaps.
• Manual checks: Light/Dark empty states, preset apply/reset, first-run hero, High Contrast illustration fallback, narrow/maximized layout, aquarium regression, and silent-update asset presence.

The official artifact is a self-contained Windows x64 installer for Windows 10 build 19041+ and Windows 11. Update metadata is ECDSA-signed and the installer is protected by SHA-256 and Authenticode signing; the current Authenticode certificate remains self-signed, so Windows may display an untrusted-publisher warning.

TLAH Studio 4.15.0

TLAH Studio 4.15.0

Version 4.15.0 gives the workspace a more distinctive visual identity while keeping the aquarium respectful of accessibility, power, and application lifecycle state. It also strengthens the zero-configuration web-search path introduced in 4.14.

Immersive living aquarium

• The top of the expanded sidebar is now a framed, depth-layered aquarium rather than a static decoration. A custom Imagegen-derived depth plate is combined with separate water tint, glass, waterline, caustic, plant, particle, bubble, and fish layers.
• Fish follow deterministic curved routes with off-screen turns, depth-dependent scale and opacity, and selective articulated tails. Plants sway gently, suspended particles drift, bubbles rise from several source zones, and organic caustic lines move across the water.
• The scene uses Microsoft.UI.Composition instead of a per-frame UI timer. Fish reuse decoded surfaces, ambient elements are grouped into a small number of fields, and resizing scales one fixed-design compositor root without rebuilding animation state.
• Click the aquarium, or focus it and press Enter/Space, to pause or resume it. The preference is retained, and the Appearance settings expose Auto, Eco, Balanced, and High quality profiles.

Responsible motion and lifecycle

• Animation stops when the sidebar is collapsed, the window is inactive, the aquarium is unloaded, the user pauses it, Windows animations are disabled, High Contrast is active, or Energy Saver is on.
• A composed static poster remains visible whenever motion is unavailable, so the visual does not collapse into an empty panel.
• Pause/play state and explanation are exposed through accessible names, help text, tooltips, keyboard focus, and a visible focus ring.
• Scene subscriptions and compositor resources are paired across load/unload, avoiding duplicate animation channels after navigation, theme changes, or window reactivation.

More reliable web search

• Public structured fallbacks now use GDELT only where it fits an unconstrained news query and use the query's language-matched Wikipedia edition only where undated results satisfy the requested recency.
• A failed structured provider is attempted once before fallback on timeouts, network faults, HTTP 408/429/5xx, or Wikipedia ratelimited/maxlag responses. A local provider gate prevents query-variant request bursts.
• Provider URLs and applicable Wikipedia CC BY-SA 4.0 attribution survive through evidence packs, saved reports, agent output, and visible previews. Cross-source research still reports insufficient or conflicting evidence instead of inventing certainty.

Validation

• Release CI runs the NuGet vulnerability audit, xUnit regression suite, 60% line/50% branch coverage gates, and warning-free x64 App and Updater builds.
• Manual verification covers Light/Dark themes, 100–200% display scale, narrow and maximized layouts, keyboard and screen-reader behavior, reduced motion, High Contrast, Energy Saver, pause persistence, sidebar collapse/reopen, and window deactivate/reactivate.

The official artifact is a self-contained Windows x64 installer for Windows 10 build 19041+ and Windows 11. Update metadata is ECDSA-signed and the installer is protected by SHA-256 and Authenticode signing; the current Authenticode certificate remains self-signed, so Windows may display an untrusted-publisher warning.

TLAH Studio 4.14.0

TLAH Studio 4.14.0

Version 4.14.0 makes research and professional artifact creation visible, direct, and measurable inside TLAH Studio.

Create & Research workbench

• Open Create & Research from the expanded sidebar, compact sidebar, message composer, or command palette. The core workflow does not require a slash command, JSON payload, hidden prompt phrase, or separate application.
• Research public sources in Quick, Balanced, or Deep mode with domain, recency, and language controls; depth selects the source budget. Results preserve citations, extraction failures, evidence gaps, and conflicting sources, and can be saved as a Markdown evidence report.
• Create styled XLSX workbooks from pasted tabular data, including frozen headers, filters, automatic widths, and bar or line chart previews. Agent spreadsheet tools additionally support formulas and safe range updates.
• Create Markdown, DOCX, or PDF documents from normal text and structured sections, then inspect supported document formats through the agent tools.
• Create flowcharts, architecture diagrams, bar charts, and line charts as validated SVG and high-DPI PNG files.
• Generated files go to the active workspace. If no workspace is selected, the app uses that chat's isolated %LOCALAPPDATA%\TLAH Studio\sandboxes\<chat> folder. The workbench displays the full path and provides result preview, Open result, and Open folder actions, so no external setup is required.

More reliable tool use

• A dynamic tool selector exposes no more than 15 relevant tools at the start of a normal turn instead of sending the entire catalog to the model.
• Tool search promotes only real registered tools into the next step, while 220 unique bilingual intent cases exercise the real 51-tool registry with category negatives and deterministic selection across code, files, Git, shell, web, MCP, tasks, memory, documents, spreadsheets, and diagrams.
• Official OpenAI and Anthropic endpoints receive strict schemas and safe read-only parallel-call hints. Compatible endpoints keep conservative payloads.
• Tool results now carry structured content, normalized error codes, retryability, source references, duration, diagnostics, warnings, and artifacts.
• Retry guidance distinguishes invalid arguments, permission waits, transient network faults, rate limits, timeouts, missing resources, unsupported content, and uncertain mutations without weakening the 4.13 permission model.

Local quality view

• The workbench includes a local Tool Quality page for call volume, completion, failure, denial, latency, shell fallback, catalog search, and per-tool success rate.
• Quality queries use tool names, statuses, and timestamps only; prompts, arguments, results, and file contents are not read for these metrics.

Validation

• The complete Release CI gate passes all 654 tests, including 220 deterministic bilingual tool-selection cases, real specialist provider schemas, artifact wrapper execution, coverage floors, and the NuGet vulnerability audit.
• Focused fixtures reopen generated XLSX, DOCX, PDF, SVG, and PNG artifacts and cover research partial failures, unsupported content, private-address blocking, path traversal, and content-free quality metrics.
• The x64 WinUI Release build completes with zero warnings and zero errors.

The official artifact is a self-contained Windows x64 installer for Windows 10 build 19041+ and Windows 11. Update metadata is ECDSA-signed and the installer is protected by SHA-256 and Authenticode signing; the current Authenticode certificate remains self-signed, so Windows may display an untrusted-publisher warning.

TLAH Studio 4.13.0

TLAH Studio 4.13.0

Version 4.13.0 focuses on dependable permissions and long-running agent work.

Permissions that match the selected mode

• Full access now runs ordinary host, network, workspace, and sensitive-file operations without approval prompts. A narrow immutable guard still rejects catastrophic disk, boot, account, and root-recursive deletion commands.
• Ask approvals authorize the exact persisted invocation through resume and execution, so an operation no longer fails immediately after the user approves it.
• Approval arguments are read-only by default. Advanced edits require an explicit opt-in and must pass JSON and tool-schema validation before they are saved.
• Plan and Auto modes use the same centralized authorization matrix, eliminating contradictory decisions between preview and execution.
• Persisted allow rules now reach the final file, network, Git, MCP, typed, and V3 execution gates. SDK approval can approve and resume atomically while preserving the checkpoint's permission mode.
• The immutable guard recognizes PowerShell delete aliases and nested script blocks as well as Windows and WSL/POSIX system roots, while retaining dry-run and workspace-safe cases.

Longer, recoverable runs

• Transient provider failures, rate limits, timeouts, incomplete streams, and server errors receive up to three bounded attempts. The visible stream resets between attempts so partial duplicate text is not retained.
• If the provider remains unavailable, the run saves a checkpoint and pauses with a clear resume path instead of collapsing into an unrecoverable failure.
• Tool failures trigger a materially different recovery attempt. If no safe route remains, the agent asks whether to try another approach or stop and summarize rather than claiming success.
• A mutating tool that times out or loses its response is fenced as an unknown outcome. Resume acknowledges it, preserves the audit trail, and continues without replaying the possibly completed side effect.
• Productive runs can extend their 48-step soft budget in 24-step increments up to the 192-step automatic ceiling. An explicit Resume can add up to 96 more steps at a time; approval callbacks do not silently grant extra budget.
• Background commands resolve a fresh execution scope for their full lifetime, avoiding disposed database/backend dependencies after the foreground run moves on.
• The local SDK and long-lived chat, sidebar, debug, and window services use isolated dependency scopes, preventing concurrent refreshes from sharing one EF database context.
• The default command timeout is now 120 seconds for realistic builds, installs, and development commands.

The official artifact is a self-contained Windows x64 installer for Windows 10 build 19041+ and Windows 11. Update metadata is ECDSA-signed and the installer is protected by SHA-256 and Authenticode signing; the current Authenticode certificate remains self-signed, so Windows may display an untrusted-publisher warning.

TLAH Studio 4.12.0

TLAH Studio 4.12.0

This release combines the Activity lifecycle hotfix with the final Nocturne interaction and performance refinement pass.

Stability

• Fixed Activity reopening on the wrong side, stale theme inheritance, scaling drift, and inactive-panel refresh work.
• Added deterministic wide-window side panes and narrow-window right-side drawers without zero-width layout churn.

Experience

• Rebuilt Settings as a centered, responsive category workspace that remains complete at full-screen and narrow sizes.
• Separated reasoning effort (Low / Medium / High / Max / Auto / Off) from tool permissions.
• Replaced double-framed composer overlays with anchored, single-surface flyouts.
• Improved scrolling and virtualization across conversations, sidebar, Activity, and Changes.
• Added refined compositor-based motion with reduced-motion support.

Verification

• 307/307 automated tests passed.
• Release x64 App and Updater builds completed with 0 warnings and 0 errors.
• Published-app startup and independent Windows UI smoke tests passed.
• Installer SHA-256: d73ce7824cece0e5d9a24b0e766ee8a2dbece485f49126d29ee6d621dcd4bb20

The installer is Authenticode-signed with the project's current self-signed publisher certificate. Windows may still show an untrusted-publisher warning until a publicly trusted code-signing certificate is adopted.

TLAH Studio 4.11.1

Activity panel hotfix

• Fixes Activity reopening in the chat column instead of the right-side workbench.
• Restores Activity's dark/light theme inheritance after panel close/reopen and after theme changes.
• Keeps the Nocturne visual treatment while avoiding composition offsets on grid-managed panels.

SHA-256: a06c9b0b807a3111040924aa326372faa0417a15d7134d04ebb6993d2153cc93

TLAH Studio 4.11.0

Nocturne Studio — final frontend refinement

• Introduces a unified Nocturne visual language: warm paper/ink surfaces, an iris accent, consistent Fluent icons, and calmer material layers.
• Rebuilds the conversation canvas, command dock, navigation, Agent trace, and Changes & Preview review workbench around clearer visual hierarchy.
• Adds restrained reveal and live-status motion that respects Windows motion preferences.
• Improves long-conversation scrolling by removing per-bubble shadow cost, avoiding full-history work during streaming, caching timeline metadata, and smoothing mouse-wheel movement.

SHA-256: a56dc5488fca955ee9551c51e226a8bb38101610d0ed398ae6c839775d903a98

TLAH Studio 4.10.0

Performance and review workflow

• Virtualized the conversation, activity, and sidebar lists for smoother navigation in large workspaces.
• Added Changes & Preview (Ctrl+Shift+D) to inspect Git workspace state and diffs without leaving the agent flow.
• Fixed the installed-app startup regression and added published/installed startup smoke tests to the release pipeline.

SHA-256: 67a99ad8d6d4d9c673329c0a8211c2e84444ce649289a99a4bf642292c5cdc20

TLAH Studio 4.9.9

Frontend performance and agent UX

• Conversations now use a paged, virtualized timeline; only visible rich message visuals are retained.
• Chat selection and sidebar search cancel stale work, and history loads on demand without losing scroll position.
• The composer shows Agent, workspace, and permission state directly.
• Plan-mode exits open a Markdown review with user feedback before write access is restored.
• Long code blocks defer syntax highlighting; collapsed agent runs no longer build full timelines.

SHA-256: 9f8e9936ae09e82394fe1554daaac69919fea7ce525cf5dadc34fab155a63be6

TLAH Studio 4.9.8

Agent safety and release hardening

• Full access now respects policy denials and safety blocks.
• Plan mode persists permission transitions and requires approval to exit.
• Update manifests use immutable versioned signatures; release verification now requires a signed installer.

SHA-256: 1fd4e1902ab0682cd3b34cb5fd6990f7efe686cafdb2ff20eb4b5e479469f320