07b Web UI Chat / Media / Browser-Ext Source Report (Partition B)

Executive summary

• Scope: partition B of the Topic 7 web/app slice — chat overlay & web chat runtimes, frontend tool execution, media creation pipelines, browser automation/overlays/measurement extensions. Local-first app shells and backend-driven/generated UI systems are owned by partition A.
• Strongest arc: chat overlay → generic ChatProvider → CoinVault web chat. It is the densest architectural spine in this partition and the one with the strongest cross-topic bridges (agents/observability, infra/auth).
• Second arc: media creation pipelines share a declarative plan → managed subprocess supervisor shape across Screencast Studio (Go+ffmpeg/GStreamer), Jingle Extractor (Python ML audio), and Rabbit Hole Podcast Intros (Remotion video). Media arc is the smallest contributor of cross-topic bridges but the strongest contributor of failure-mode nodes.
• Third arc: browser automation/overlays/extensions. Chrome/Firefox extension work, surf-go JS probes, and DOM scraping share the same content-script lens + DOM geometry capture substrate; this is the partition's strongest bridge to the typography/design-system topic.
• Likely map spine: sessionstream hub --protocol--> headless ChatProvider --owns--> frontend tool registry --routes--> browser|human tool execution --returns--> backend run loop, paralleled by media plan compiler --supervises--> subprocess manager and browser overlay lens --captures--> DOM geometry/CSS --feeds--> visual diff / component extraction.
• Start here: Projects/2026/05/29/ARTICLE - Chatbot Overlay Framework - TypeScript and Frontend Tool Calling Deep Dive.md (chat arc) and Projects/2026/04/25/Building Chrome Extensions for DOM Overlay Selection and Component Extraction.md (browser ext arc).

Scope and search method

• Corpus: Projects/2026/{03,04,05,06}/ Markdown files.
• Search: filename + grep for chat|overlay|provider|coinvault|screencast|jingle|rabbit hole|podcast|chrome extension|component extraction|hover component|typoscope|firefox tab|surf-go|surf-cli|browser verbs|dom scrap|latent space|jellyfin|video lecture.
• Selection: deeply read the canonical architecture articles for each arc; heading-scanned adjacent follow-ups (GStreamer migration, Chat Overlay API proposals, Canonical Chat Event Protocol, Client-side Tool Broker, surf-go/surf-cli, Hover Inspector, TypoScope, Firefox Tab Tracker, Screencast Studio performance/Prometheus follow-ups, Latent Space Podcast Downloader, Jellyfin playbook, Jingle article sibling). Files owned by partition A (md-view, Wails, SQLide, Go-Go Parc, Retro Obsidian, Fringe Admin DSL, Browser-Side React Widget Runtime) were not re-read.

Evidence ledger

Path	Evidence level	Lines / basis	Cluster	Why it matters
Projects/2026/05/29/ARTICLE - Chatbot Overlay Framework - TypeScript and Frontend Tool Calling Deep Dive.md	read	lines 1-end	Chat overlay	Canonical chat overlay + frontend tool runtime; defines three contract layers, protobuf tool protocol, automatic vs human tool modes
Projects/2026/06/01/ARTICLE - Generic ChatProvider - From Overlay Runtime to Provider Backed Web Chat.md	read	lines 1-1111	Chat overlay	Extraction of headless provider from overlay; timeline adapter API; provider-scoped registries; legacy deletion playbook
Projects/2026/06/02/ARTICLE - CoinVault Web Chat - Event Projection Debug Exports and Thinking Persistence.md	read	lines 1-end	Chat overlay	Production ChatProvider adoption; debug SQLite export; absent-vs-empty thinking persistence bug
Projects/2026/04/10/PROJ - Screencast Studio - Architecture and Runtime Deep Dive.md	read	lines 1-end	Media	Compiled plan as central abstraction; web server as runtime supervisor; staged shutdown
Projects/2026/04/13/PROJ - Jingle Extractor - AI Audio Pipeline with MiniMax Demucs WhisperX.md	read	lines 1-end	Media	Python ML audio pipeline; weighted clip scoring; stems-first mining rule
Projects/2026/04/11/PROJ - Rabbit Hole Podcast Intros - Remotion Video Generation.md	read	lines 1-end	Media	Remotion composition pattern; useCurrentFrame + interpolate + Easing core; Python audio synthesis chain feeding <Audio>
Projects/2026/04/25/Building Chrome Extensions for DOM Overlay Selection and Component Extraction.md	read	lines 1-end	Browser ext	Manifest V3 content-script lifecycle; getBoundingClientRect() coordinate trap; html2canvas capture; LLM-DOM validation loop
Projects/2026/05/29/ARTICLE - Chat Overlay API - Two Proposals for a Typed Widget Streaming Architecture.md	heading-scanned	headings + summary	Chat overlay	Origin of generic-vs-ecommerce overlay decision; three-layer convergence
Projects/2026/05/29/ARTICLE - Chat Overlay API - Sessionstream Widget Runtime Deep Dive.md	heading-scanned	headings + summary	Chat overlay	Headless runtime + optional React layer; widget instance as generative UI unit; ordinals as strings
Projects/2026/05/08/ARTICLE - Canonical Chat Event Protocol - Provider Streams to Browser State.md	heading-scanned	headings + summary	Chat overlay	Streams-as-state-machines; reducer-shaped provider adapters; terminal semantics
Projects/2026/05/09/ARTICLE - Canonical Chat Event Protocol - Provider Streams to Browser State.md	heading-scanned	headings + summary	Chat overlay	Duplicate/second pass of the 05/08 article; same canonical event vocabulary
Projects/2026/04/17/ARTICLE - Browser-Owned Capability Execution for Chat - Narrative Field Guide.md	heading-scanned	headings + summary	Chat overlay	Backend=control plane, browser=execution plane; worker/OPFS/WASM capability pattern
Projects/2026/04/17/PROJ - Client-side Tool Broker for Chat - Intern Research Guide.md	heading-scanned	headings + summary	Chat overlay	Earlier POC of frontend tool broker; diagnostics-heavy; same-origin serving
Projects/2026/04/13/PROJ - Screencast Studio - GStreamer Migration and Media Runtime Intern Guide.md	heading-scanned	headings + summary	Media	Execution-engine swap (ffmpeg→GStreamer); plan-first mental model; EOS and bus message concepts
Projects/2026/04/13/PROJ - Screencast Studio - GStreamer Setup, Performance, and Region Debugging Report.md	heading-scanned	headings + summary	Media	Shared capture model; x264/bridge CPU cost; region capture bug (full-root + videocrop + frontend aspect-ratio)
Projects/2026/04/15/ARTICLE - Screencast Studio - Performance Investigation Approaches and Tricks.md	heading-scanned	headings + summary	Media	Fresh-server vs real-browser run split; negative findings as progress
Projects/2026/04/15/ARTICLE - Screencast Studio - Prometheus Metrics Architecture and Field Guide.md	heading-scanned	headings + summary	Media	In-process Prometheus registry; counter delta technique; ruled out upper-layer suspects
Projects/2026/04/13/ARTICLE - Building an AI Audio Jingle Pipeline - MiniMax Demucs WhisperX and pydub.md	heading-scanned	headings + summary	Media	Pattern-form sibling of the Jingle Extractor project report; same mining rules and failure modes
Projects/2026/04/10/ARTICLE - surf-go Browser Verbs - Using JS Probes to Build Reliable Web Automation.md	heading-scanned	headings + summary	Browser ext	Probe → numbered ticket scripts → embedded go:embed script → dual-mode Glazed command; tab ownership as part of API
Projects/2026/04/11/PROJ - Surf CLI - ChatGPT Transcript Extraction.md	heading-scanned	headings + summary	Browser ext	Citation-fragment bug; turn-based vs global selection; thought-trace expansion
Projects/2026/04/11/PROJ - Firefox Tab Tracker - Browser Tab Monitoring via Native Messaging.md	heading-scanned	headings + summary	Browser ext	CDP vs WebExtension+Native Messaging; manifest whitelist, path verification, no network access
Projects/2026/04/28/PROJ - Hover Component Inspector - Building a Browser Overlay Lens.md	heading-scanned	headings + summary	Browser ext	Shadow DOM overlay with pointer-events:none; elementFromPoint + getBoundingClientRect + getComputedStyle; component names as evidence-backed guesses
Projects/2026/05/18/PROJ - TypoScope - Firefox Typography Measurement Extension.md	heading-scanned	headings + summary	Browser ext	Rendered-font detection vs CSS; contrast/rhythm/scale audit; design token extraction
Projects/2026/04/26/Packaging and Publishing Chrome Extensions.md	heading-scanned	headings only	Browser ext	Manifest V3 constraints, Vite IIFE bundling, .crx packaging pitfalls
Projects/2026/03/21/PROJ - DOM Scraping Experiment - Web to Markdown via JS DOM Queries.md	heading-scanned	headings + summary	Browser ext	fetch → jsdom → querySelectorAll; numbered .js exploration trail as primary artifact
Projects/2026/05/02/PROJ - Latent Space Podcast Downloader.md	heading-scanned	headings + summary	Media	RSS-first + YouTube fallback; surf CLI field guide; MIME/extension trap; feed 20-item ceiling
Projects/2026/05/07/ARTICLE - Playbook - Downloading Video Lectures to a Jellyfin Media Server.md	heading-scanned	headings + summary	Media	Jellyfin episode naming; NFS permission failures; YouTube bot-detection workaround (Firefox cookies + deno); overlapping path trap

Projects and reports found

Arc 1 — Chat overlay, web chat, and frontend tool execution

• Projects/2026/05/29/ARTICLE - Chatbot Overlay Framework - TypeScript and Frontend Tool Calling Deep Dive.md — status: current; canonical implementation article.
• Projects/2026/05/29/ARTICLE - Chat Overlay API - Two Proposals for a Typed Widget Streaming Architecture.md — status: historical; design proposal that resolved the generic-vs-ecommerce package identity question.
• Projects/2026/05/29/ARTICLE - Chat Overlay API - Sessionstream Widget Runtime Deep Dive.md — status: historical; design deep dive that established headless-runtime + optional-React boundary.
• Projects/2026/06/01/ARTICLE - Generic ChatProvider - From Overlay Runtime to Provider Backed Web Chat.md — status: current; production migration of Pinocchio cmd/web-chat onto @go-go-golems/chat-provider.
• Projects/2026/05/31/ARTICLE - ChatProvider Web Chat Cleanup - Provider Runtime Timeline Adapters and Example Architecture.md — status: current; earlier-cited cleanup sibling (title-scanned via 06/01).
• Projects/2026/06/01/ARTICLE - Pinocchio Web Chat Cleanup - Engineering Playbook and Technical Report.md — status: current; sibling playbook (title-scanned via 06/01).
• Projects/2026/06/02/ARTICLE - CoinVault Web Chat - Event Projection Debug Exports and Thinking Persistence.md — status: current; production CoinVault adoption of chat-provider@^0.2.1.
• Projects/2026/05/08/ARTICLE - Canonical Chat Event Protocol - Provider Streams to Browser State.md and 05/09 duplicate — status: current; canonical event vocabulary underlying the entire chat arc.
• Projects/2026/04/17/ARTICLE - Browser-Owned Capability Execution for Chat - Narrative Field Guide.md and 04/17/PROJ - Client-side Tool Broker for Chat - Intern Research Guide.md — status: experimental/historical; earlier POC that prefigured the frontend tool protocol.

Arc 2 — Media creation, capture, and review workflows

• Projects/2026/04/10/PROJ - Screencast Studio - Architecture and Runtime Deep Dive.md — status: current (ffmpeg era); architecture canonical.
• Projects/2026/04/13/PROJ - Screencast Studio - GStreamer Migration and Media Runtime Intern Guide.md — status: migrated; execution engine swap to GStreamer.
• Projects/2026/04/13/PROJ - Screencast Studio - GStreamer Setup, Performance, and Region Debugging Report.md — status: current; performance and region debugging follow-up.
• Projects/2026/04/15/ARTICLE - Screencast Studio - Performance Investigation Approaches and Tricks.md — status: current; methodology article.
• Projects/2026/04/15/ARTICLE - Screencast Studio - Prometheus Metrics Architecture and Field Guide.md — status: current; in-process metrics field guide.
• Projects/2026/04/13/PROJ - Jingle Extractor - AI Audio Pipeline with MiniMax Demucs WhisperX.md and 04/13/ARTICLE - Building an AI Audio Jingle Pipeline...md — status: current; Python ML audio pipeline.
• Projects/2026/04/11/PROJ - Rabbit Hole Podcast Intros - Remotion Video Generation.md — status: current; Remotion composition pattern.
• Projects/2026/05/02/PROJ - Latent Space Podcast Downloader.md — status: current; podcast feed + YouTube fallback downloader.
• Projects/2026/05/07/ARTICLE - Playbook - Downloading Video Lectures to a Jellyfin Media Server.md — status: current; Jellyfin ingestion playbook.

Arc 3 — Browser automation, overlays, and measurement extensions

• Projects/2026/04/25/Building Chrome Extensions for DOM Overlay Selection and Component Extraction.md — status: current; canonical Chrome extension architecture article.
• Projects/2026/04/26/Packaging and Publishing Chrome Extensions.md — status: current; packaging/distribution companion.
• Projects/2026/04/28/PROJ - Hover Component Inspector - Building a Browser Overlay Lens.md — status: current; sibling overlay lens extension.
• Projects/2026/05/18/PROJ - TypoScope - Firefox Typography Measurement Extension.md — status: current; typography measurement extension.
• Projects/2026/04/11/PROJ - Firefox Tab Tracker - Browser Tab Monitoring via Native Messaging.md — status: current; native messaging bridge.
• Projects/2026/04/10/ARTICLE - surf-go Browser Verbs - Using JS Probes to Build Reliable Web Automation.md — status: current; surf-go verb pattern.
• Projects/2026/04/11/PROJ - Surf CLI - ChatGPT Transcript Extraction.md — status: current; transcript extraction sibling.
• Projects/2026/03/21/PROJ - DOM Scraping Experiment - Web to Markdown via JS DOM Queries.md — status: historical; earlier jsdom scraping pattern.

Representative evidence

Chatbot Overlay Framework (05/29)

• Claim: The framework is a generic chat/widget/tool runtime, not an ecommerce assistant. Ecommerce widgets are a demo layer over a generic substrate.
• Evidence: Projects/2026/05/29/ARTICLE - Chatbot Overlay Framework - TypeScript and Frontend Tool Calling Deep Dive.md lines 14-22 (summary), 24-46 (three contracts), 188-246 (frontend tool proto), 332-386 (tool runtime layers), 460-510 (human tool render API).
• Map implication: establishes headless chat overlay, frontend tool registry, human-in-the-loop tool mode as reusable concept nodes.

Generic ChatProvider (06/01)

• Claim: The reusable abstraction is a headless provider runtime, not a chat widget; Pinocchio web-chat became provider-backed by moving protocol mechanics into @go-go-golems/chat-provider while keeping app-owned profile policy, renderers, cards, and timeline adapters.
• Evidence: Projects/2026/06/01/ARTICLE - Generic ChatProvider - From Overlay Runtime to Provider Backed Web Chat.md lines 9-22 (summary), 80-145 (provider boundary), 396-446 (timeline adapter type with hydration policy), 682-756 (Pinocchio adapter list).
• Map implication: timeline adapter (with live + hydrate policy) is a first-class concept; provider-scoped registry and request-body adapter are reusable edges.

CoinVault Web Chat (06/02)

• Claim: CoinVault owns its own debugrecorder package and SQLite export path; the thinking-content bug was caused by sparse terminal reasoning events overwriting streamed text with empty strings — the mapper must distinguish absent content from empty content.
• Evidence: Projects/2026/06/02/ARTICLE - CoinVault Web Chat - Event Projection Debug Exports and Thinking Persistence.md lines 22-40 (summary), 69-128 (debug recorder), 245-315 (patch vs terminal mapper fix), 437-466 (design rules).
• Map implication: absent-vs-empty projection bug, debug SQLite export, stable entity id across patch/terminal are durable failure-mode and invariant nodes.

Screencast Studio (04/10)

• Claim: The system is built around a compiled recording plan, not ffmpeg command lines; the web server is a runtime supervisor (owns recording/preview/telemetry managers), not a transport layer; staged shutdown closes HTTP intake before draining managers.
• Evidence: Projects/2026/04/10/PROJ - Screencast Studio - Architecture and Runtime Deep Dive.md lines 5-12 (summary), 35-78 (layers), 95-142 (compiled plan), 213-262 (managers), 285-365 (cancellation refactor).
• Map implication: compiled plan as central abstraction, web server as runtime supervisor, staged shutdown ordering are reusable architecture nodes.

Jingle Extractor (04/13)

• Claim: Multi-model ML audio pipeline (MiniMax → Demucs → WhisperX → librosa → pydub) with weighted clip scoring; mine from no_vocals stem for instrumental clips; WhisperX is CPU-slow and may time out on extreme vocals.
• Evidence: Projects/2026/04/13/PROJ - Jingle Extractor - AI Audio Pipeline with MiniMax Demucs WhisperX.md lines 21-85 (summary + status), 96-142 (component table), 178-217 (scoring algorithm), 263-330 (WhisperX pipeline), 365-470 (test results).
• Map implication: ML audio pipeline and weighted clip scoring nodes; WhisperX CPU slowness and death-metal growl transcription timeout failure modes.

Rabbit Hole Podcast Intros (04/11)

• Claim: Remotion video compositions driven by useCurrentFrame() + interpolate() + Easing.bezier(); audio synthesized in Python (numpy/scipy) with distortion/bitcrush/lowpass chain; <Audio> element binds audio to composition with frame-driven volume callbacks.
• Evidence: Projects/2026/04/11/PROJ - Rabbit Hole Podcast Intros - Remotion Video Generation.md lines 20-117 (compositions + audio table), 200-280 (squash-stretch pattern), 410-470 (chromatic aberration + shake), 700-770 (Audio API).
• Map implication: Remotion composition and frame-driven programmatic audio synthesis are reusable nodes; strong bridge to typography topic via interpolate() + Easing.bezier() (same primitives as CSS animation).

Chrome Extension DOM Overlay (04/25)

• Claim: Interactive component extraction requires a browser extension (not a Playwright script) because human judgment is needed; fixed-position overlay uses viewport coordinates and must NOT add window.scrollX/Y to getBoundingClientRect(); content scripts cannot use ES module imports and require a Vite IIFE bundle; html2canvas captures at selection time; LLM suggestions are validated against the live DOM and missing selectors are dropped.
• Evidence: Projects/2026/04/25/Building Chrome Extensions for DOM Overlay Selection and Component Extraction.md lines 1-38 (problem framing), 73-156 (overlay positioning + coordinate trap), 177-260 (capture + storage), 280-303 (LLM-DOM validation loop).
• Map implication: browser overlay lens, getBoundingClientRect coordinate trap, content-script IIFE bundling, LLM-DOM validation loop are reusable concept/failure-mode nodes.

Topic architecture / spine

Three parallel spines run through this partition.

flowchart TD
    subgraph ChatArc[Chat overlay / web chat spine]
        Proposal[Chat Overlay API proposals] --> Overlay[Chatbot Overlay Framework]
        Overlay --> Provider[Generic ChatProvider headless runtime]
        Provider --> CoinVault[CoinVault web chat production]
        CEP[Canonical Chat Event Protocol] -.feeds.-> Provider
        Broker[Client-side Tool Broker POC] -.prefigured.-> Overlay
    end

    subgraph MediaArc[Media pipeline spine]
        DSL[Setup DSL] --> Norm[Normalized EffectiveConfig]
        Norm --> Plan[Compiled plan]
        Plan --> Mgr[Runtime managers recording/preview/telemetry]
        Mgr --> Exec[Media execution engine ffmpeg or GStreamer]
        Jingle[Jingle Extractor] -.shares.-> Plan
        Remotion[Remotion compositions] -.parallel.-> Exec
    end

    subgraph BrowserArc[Browser extension / automation spine]
        Content[Content script + fixed overlay] --> Geometry[getBoundingClientRect + computed CSS]
        Geometry --> Capture[html2canvas PNG capture]
        Capture --> Storage[chrome.storage.local by URL]
        Storage --> Export[Manifest JSON + LLM simple format]
        Export -.validated by.-> LiveDOM[Live DOM querySelector]
        Surf[surf-go JS probes] -.parallel.-> Geometry
    end

The three spines do not directly depend on each other within this partition. The chat arc is the densest; the media arc is the most failure-mode-rich; the browser arc is the most cross-topic-bridge-rich.

Clusters and subclusters

Cluster A: Chat overlay & web chat runtime

• Subclusters: design proposals → overlay framework → headless ChatProvider → production CoinVault adoption; canonical chat event protocol; client-side tool broker POC.
• Invariant: backend owns conversation and routing; browser owns capabilities and rendering; the protocol (protobuf over sessionstream WebSocket + HTTP commands) is the only coupling.
• Open question: should ChatProvider and sessionstream live primarily under Topic 5 (AI agents/observability) with cross-links here, given that the entire substrate is shared?

Cluster B: Frontend tool execution

• Subclusters: automatic frontend tools, human-in-the-loop tools, frontend tool manifest/result protocol, abort/cancellation semantics.
• Invariant: a tool call is a tool_call timeline entity; completion is owned by either execute() returning (automatic) or respond()/reject() being called (human); the backend resumes only after a ChatFrontendToolResult is received.
• Open question: where does the security boundary live between model-emitted tool requests and browser-side mutating execution? The current implementation explicitly defers policy defaults for mutating tools.

Cluster C: Media pipelines

• Subclusters: Screencast Studio (Go+ffmpeg/GStreamer, plan-driven), Jingle Extractor (Python ML audio), Rabbit Hole Podcast Intros (Remotion + Python audio), Latent Space downloader + Jellyfin ingestion playbook.
• Invariant: declarative plan/config over raw subprocess invocations; output policy, telemetry, and review are first-class concerns; the media execution engine is swappable (ffmpeg→GStreamer) precisely because the plan layer is engine-agnostic.
• Open question: should the map emphasize user-facing review/control surfaces or the pipeline engines? Both Screencast Studio (web control server) and Jingle Extractor (CLI) have explicit "review surface" ambitions but neither has shipped it fully.

Cluster D: Browser automation & extensions

• Subclusters: Chrome DOM overlay/component extraction, Hover Component Inspector, TypoScope Firefox measurement, Firefox Tab Tracker (native messaging), surf-go/surf-cli browser verbs, DOM scraping experiment.
• Invariant: extensions and surf-go both treat the browser as a measurement surface, not a scraping target; DOM geometry and computed-style capture are the substrate; LLM-DOM validation loops combine model suggestions with ground-truth selectors.
• Open question: which of these are product surfaces vs research tooling? TypoScope and Hover Inspector bridge heavily into the typography/design-system topic.

Recurring concepts, technologies, and failure modes

Concepts

• headless chat provider runtime (mechanics vs UI separation)
• timeline adapter with live + hydrate policy (unified projection of WebSocket frames and snapshot entities)
• frontend tool registry / manifest / result protocol
• human-in-the-loop tool as a tool mode (not a widget convention)
• snapshot-before-live WebSocket hydration
• stable entity id across patch and terminal events
• absent-vs-empty field distinction (mapper responsibility)
• compiled plan as central abstraction (media)
• web server as runtime supervisor (media)
• staged shutdown ordering (close intake before draining managers)
• browser overlay lens (fixed-position, viewport-coordinated)
• content-script IIFE bundling (Vite output for Chrome MV3)
• LLM-DOM validation loop (LLM suggests, DOM validates, human judges)
• probe → embed → dual-mode command (surf-go pattern)
• reducer-shaped provider adapters (canonical chat event protocol)
• frame-driven programmatic audio synthesis (Remotion + Python)
• weighted clip scoring (jingle mining)
• provider-scoped registries (per-instance tool/widget/adapter registries)
• request-body adapter (app supplies request content, provider controls sequence)

Technologies

• sessionstream (Go hub, WebSocket transport, snapshot hydration)
• @go-go-golems/chat-provider (published headless runtime package, ^0.2.1)
• @go-go-golems/chat-overlay (overlay shell)
• protobuf (frontend_tool.proto, widget.proto, UI event frames)
• Redux (provider-scoped timeline store, patch merging)
• Playwright (browser smoke tests)
• Storybook (renderer contract surface)
• ffmpeg and GStreamer (media execution engines)
• parec (PulseAudio audio metering)
• Prometheus (in-process metrics registry, counter delta technique)
• MiniMax music-2.6, Demucs htdemucs, WhisperX large-v2, librosa, pydub (ML audio stack)
• Remotion (useCurrentFrame, interpolate, Easing, AbsoluteFill, <Audio>)
• numpy/scipy (audio synthesis: distortion, bitcrush, lowpass)
• Chrome Manifest V3 (content scripts, chrome.storage.local, chrome.runtime.onMessage)
• Firefox WebExtension + Native Messaging
• html2canvas (DOM-to-PNG)
• Vite/Rollup (IIFE bundling for content scripts)
• jsdom (Node-side DOM scraping)
• yt-dlp, deno, Firefox cookies (YouTube bot-detection workaround)
• Jellyfin, jellyfin-cli, TrueNAS NFS (media library ingestion)
• devctl (local service orchestration)

Failure modes

• absent-vs-empty content overwrite (CoinVault thinking persistence bug; sparse ChatReasoningSegmentFinished erased streamed text)
• live-only projection creates reload bugs (Pinocchio agent-mode cards rendered as raw protobuf JSON after reload)
• global registry invisible coupling (tests mounting two providers interfere)
• demo routes become architecture if not deleted (provider demo became confusing once production tests existed)
• wrapping legacy runtime preserves two sources of truth (overlay+Pinocchio both owning Redux timeline slices)
• mixed package-manager lockfiles (npm vs pnpm ambiguity)
• getBoundingClientRect + scroll double-count (offsetting viewport coords in a fixed overlay)
• content-script ES module imports silently fail (need Vite IIFE bundle)
• chrome.storage.local 5MB quota exhaustion (PNG data URLs)
• html2canvas CSS Grid / transform / SVG filter rendering gaps
• Manifest V3 CSP and file:// permission constraints
• Babel-standalone React mount race (content script runs before JSX executes; needs MutationObserver retry)
• WhisperX CPU slowness (~15min for 55s track)
• death-metal growl transcription timeout
• MiniMax fixed ~130s output regardless of prompt
• Demucs progress bar hangs in non-interactive shells
• argparse store_true + default=True bug (cannot disable instrumental mode)
• Screencast Studio x264 encoder CPU spike
• shared raw-consumer → Go → appsrc recording bridge overhead
• ximagesrc region capture shows wrong full-display content (region bug required full-root capture + videocrop + frontend aspect-ratio fix)
• killing media process instead of finalizing (EOS / shutdown semantics)
• confusing preview semantics with recording semantics
• citation-fragment mistaken for full assistant response (Surf CLI ChatGPT transcript bug)
• surf tab vs navigate (must create tab first, then navigate)
• RSS feed 20-item ceiling (Latent Space downloader)
• YouTube "Sign in to confirm you're not a bot" block (Firefox cookies + deno workaround)
• yt-dlp format selector / HTTP 403 on m3u8 fragments
• rsync mkstemp Permission denied on NFS (maproot_user fix on TrueNAS)
• Jellyfin overlapping path trap (library showed 0 items)
• jellyfin-cli add-folder creates library with empty paths
• Bash uppercasing produced "LEC1A" instead of "1A" (episode naming bug)

Candidate concept-map material

Nodes

Node	Type	Confidence	Notes
Chatbot Overlay Framework	project	high	Generic chat/widget/tool runtime; ecommerce is a demo layer
Generic ChatProvider	project	high	Headless provider runtime extracted from overlay
CoinVault Web Chat	project	high	Production ChatProvider adopter; debug SQLite export
Canonical Chat Event Protocol	project	high	Reducer-shaped provider adapters; lifecycle events
Client-side Tool Broker for Chat	project	medium	Earlier POC; prefigured frontend tool protocol
Screencast Studio	project	high	Plan-driven Go media tool; ffmpeg→GStreamer migration
Jingle Extractor	project	high	Python ML audio pipeline
Rabbit Hole Podcast Intros	project	high	Remotion video compositions
Latent Space Podcast Downloader	project	medium	RSS+YouTube fallback; surf CLI field guide
Jellyfin Video Lecture Playbook	project	medium	Ingestion playbook; NFS/Jellyfin failure modes
Chrome DOM Overlay Component Extractor	project	high	Manifest V3 + html2canvas + LLM-DOM loop
Hover Component Inspector	project	medium	Shadow DOM overlay lens
TypoScope Firefox Extension	project	medium	Typography measurement; bridges to Topic 3
Firefox Tab Tracker	project	medium	WebExtension + Native Messaging
surf-go Browser Verbs	project	high	Probe → embed → dual-mode command pattern
Surf CLI ChatGPT Transcript	project	medium	Transcript extraction; citation-fragment bug
DOM Scraping Experiment	project	medium	jsdom + numbered .js exploration trail
Headless chat provider runtime	concept	high	Mechanics vs UI separation
Timeline adapter (live + hydrate)	concept	high	Unified projection of WebSocket frames and snapshot entities
Frontend tool registry / manifest	concept	high	Browser-advertised capabilities consumed by backend run loop
Human-in-the-loop tool mode	concept	high	Approval as a tool mode, not a widget convention
Snapshot-before-live hydration	concept	high	Buffer live frames until snapshot applied
Stable entity id across patch/terminal	concept	high	Required for in-place timeline updates
Compiled plan as central abstraction	concept	high	Media: intent → normalized config → plan → execution
Web server as runtime supervisor	concept	high	Media: server owns managers, not just transport
Staged shutdown ordering	concept	high	Close intake before draining managers
Browser overlay lens	concept	high	Fixed-position viewport-coordinated overlay
LLM-DOM validation loop	concept	high	LLM suggests selectors, DOM validates, human judges
Reducer-shaped provider adapter	concept	high	Canonical chat event protocol pattern
Provider-scoped registry	concept	high	Per-instance tool/widget/adapter registries
Request-body adapter	concept	high	App supplies content, provider controls sequence
Frame-driven programmatic audio	concept	medium	Remotion + Python synthesis chain
Weighted clip scoring	concept	medium	Jingle mining algorithm
Probe → embed → dual-mode command	concept	high	surf-go browser verb pattern
sessionstream	technology	high	Go hub, WebSocket transport, snapshot hydration
@go-go-golems/chat-provider	technology	high	Published headless runtime package
protobuf (chatoverlay/tools/v1, widget.proto)	technology	high	Typed tool/widget/event schema
Redux (provider-scoped)	technology	high	Timeline store with patch merging
Playwright	technology	medium	Browser smoke tests for chat arc
Storybook	technology	medium	Renderer contract surface
ffmpeg	technology	high	Screencast Studio execution engine (legacy)
GStreamer	technology	high	Screencast Studio execution engine (current)
Prometheus (in-process)	technology	medium	Screencast Studio metrics
MiniMax music-2.6	technology	medium	AI music generation
Demucs htdemucs	technology	medium	Stem separation
WhisperX large-v2	technology	medium	Word-level transcription
librosa / pydub	technology	medium	Beat detection / clip export
Remotion	technology	high	React-based video composition
Chrome Manifest V3	technology	high	Extension platform
Firefox WebExtension + Native Messaging	technology	medium	Firefox extension platform
html2canvas	technology	high	DOM-to-PNG capture
Vite (IIFE bundling)	technology	high	Content-script bundler
jsdom	technology	medium	Node-side DOM scraping
Chrome / Firefox	platform	high	Extension hosts
Jellyfin / TrueNAS	platform	medium	Media library / NFS storage
YouTube / Internet Archive	platform	medium	Video sources
ChatGPT / Kagi	platform	medium	surf-go automation targets
Absent-vs-empty content overwrite	failure-mode	high	CoinVault thinking persistence bug
Live-only projection reload bug	failure-mode	high	Pinocchio agent-mode raw JSON after reload
Global registry invisible coupling	failure-mode	high	Tests mounting two providers interfere
Demo route architecture creep	failure-mode	medium	Provider demo became confusing
Two-sources-of-truth runtime wrap	failure-mode	medium	Overlay+Pinocchio both owning timeline
getBoundingClientRect + scroll double-count	failure-mode	high	Viewport coords offset by scroll in fixed overlay
Content-script ES module import failure	failure-mode	high	Chrome content scripts need IIFE bundle
chrome.storage.local 5MB quota	failure-mode	medium	PNG data URLs exhaust quota
Babel-standalone mount race	failure-mode	medium	Content script runs before React mounts
WhisperX CPU slowness	failure-mode	medium	~15min for 55s track
Death-metal growl transcription timeout	failure-mode	medium	Extreme vocals fail ASR
MiniMax fixed 130s output	failure-mode	medium	Cannot control duration
x264 encoder CPU spike	failure-mode	medium	Screencast Studio recording cost
ximagesrc region capture wrong content	failure-mode	medium	Region bug needed full-root + videocrop
Kill vs finalize media process	failure-mode	medium	EOS / shutdown semantics
Citation-fragment mistaken for full response	failure-mode	medium	Surf CLI ChatGPT transcript bug
YouTube bot-detection block	failure-mode	medium	Firefox cookies + deno workaround
rsync NFS permission denied	failure-mode	medium	maproot_user fix on TrueNAS
Jellyfin overlapping path trap	failure-mode	medium	Library showed 0 items
Should ChatProvider live under Topic 5 or Topic 7?	open-question	high	Cross-topic ownership decision
Should media map emphasize review surfaces or pipeline engines?	open-question	medium	Map shape decision
Where is the security boundary for mutating browser tools?	open-question	medium	Policy gap in chat arc
Are browser extensions product surfaces or research tooling?	open-question	medium	TypoScope / Hover Inspector boundary

Edges

• Chat Overlay API proposals --resolved by--> Generic ChatProvider [high] (Projects/2026/05/29/...Two Proposals...md, Projects/2026/06/01/...Generic ChatProvider...md)
• Chatbot Overlay Framework --extracted into--> Generic ChatProvider [high] (Projects/2026/06/01/...Generic ChatProvider...md lines 80-145)
• Generic ChatProvider --adopted by--> CoinVault Web Chat [high] (Projects/2026/06/02/...CoinVault Web Chat...md lines 22-40)
• Canonical Chat Event Protocol --feeds--> Generic ChatProvider [high] (Projects/2026/05/08/...Canonical Chat Event Protocol...md summary; 06/01 lines 9-22)
• Client-side Tool Broker for Chat --prefigured--> Chatbot Overlay Framework [medium] (Projects/2026/04/17/...Browser-Owned Capability Execution...md summary; 05/29 lines 188-246)
• Generic ChatProvider --owns--> Frontend tool registry / manifest [high] (Projects/2026/05/29/...Chatbot Overlay Framework...md lines 332-386)
• Frontend tool registry / manifest --publishes--> Backend run loop resume [high] (Projects/2026/05/29 sequence diagram)
• Human-in-the-loop tool mode --completes via--> respond() / reject() [high] (Projects/2026/05/29 lines 460-510)
• Snapshot-before-live hydration --protects--> Stable entity id across patch/terminal [high] (Projects/2026/05/29 wsManager buffering; 06/01 adapter section)
• Timeline adapter (live + hydrate) --replaces--> Live-only projection reload bug [high] (Projects/2026/06/01 lines 396-446, 682-756)
• Provider-scoped registry --prevents--> Global registry invisible coupling [high] (Projects/2026/06/01 lines 580-620)
• CoinVault Web Chat --exhibited--> Absent-vs-empty content overwrite [high] (Projects/2026/06/02 lines 245-315)
• CoinVault Web Chat --owns--> Debug SQLite export [high] (Projects/2026/06/02 lines 69-128)
• Setup DSL --normalizes into--> Compiled plan as central abstraction [high] (Projects/2026/04/10/...Screencast Studio...md lines 95-142)
• Compiled plan as central abstraction --supervises--> Web server as runtime supervisor [high] (Projects/2026/04/10 lines 213-262)
• Web server as runtime supervisor --enforces--> Staged shutdown ordering [high] (Projects/2026/04/10 lines 285-365)
• ffmpeg --swapped for--> GStreamer [high] (Projects/2026/04/13/...GStreamer Migration...md summary)
• Screencast Studio --exhibited--> x264 encoder CPU spike [medium] (Projects/2026/04/13/...GStreamer Setup...md summary)
• Screencast Studio --exhibited--> ximagesrc region capture wrong content [medium] (Projects/2026/04/13/...GStreamer Setup...md summary)
• MiniMax music-2.6 --feeds--> Demucs htdemucs --feeds--> WhisperX large-v2 --feeds--> Weighted clip scoring [high] (Projects/2026/04/13/...Jingle Extractor...md lines 96-142)
• WhisperX large-v2 --exhibits--> WhisperX CPU slowness [medium] (Projects/2026/04/13/...Jingle Extractor...md lines 365-470)
• Remotion --drives--> Frame-driven programmatic audio [medium] (Projects/2026/04/11/...Rabbit Hole...md lines 700-770)
• Chrome Manifest V3 --requires--> Content-script IIFE bundling [high] (Projects/2026/04/25/...Chrome Extensions...md section 6)
• Browser overlay lens --measures via--> getBoundingClientRect + computed CSS [high] (Projects/2026/04/25 section 4; Projects/2026/04/28/...Hover Component Inspector...md summary)
• getBoundingClientRect + scroll double-count --caused by--> Browser overlay lens [high] (Projects/2026/04/25 section 4.2)
• html2canvas --captures at--> selection time [high] (Projects/2026/04/25 section 7)
• LLM-DOM validation loop --drops--> missing selectors [high] (Projects/2026/04/25 section 9.2)
• surf-go Browser Verbs --follows--> Probe → embed → dual-mode command [high] (Projects/2026/04/10/...surf-go...md summary)
• Surf CLI ChatGPT Transcript --exhibited--> Citation-fragment mistaken for full response [medium] (Projects/2026/04/11/...Surf CLI...md "Citation-Fragment Bug")
• Jellyfin Video Lecture Playbook --exhibited--> YouTube bot-detection block [medium] (Projects/2026/05/07/...Jellyfin...md Step 4)
• Jellyfin Video Lecture Playbook --exhibited--> rsync NFS permission denied [medium] (Projects/2026/05/07 Step 3)
• Jellyfin Video Lecture Playbook --exhibited--> Jellyfin overlapping path trap [medium] (Projects/2026/05/07 Step 5)

Overlaps with other topic slices

• Topic 5 (AI agents / transcripts / observability): sessionstream, ChatProvider, Pinocchio, Geppetto, Canonical Chat Event Protocol, frontend tool execution, debug SQLite export, and mock_parity profile are all shared substrate. The chat overlay arc is effectively the browser-side of the agent observability spine. Topic 5 likely owns the retrospective transcript analysis (go-minitrace) and live streaming observability (Sessionstream hub, Pi extensions); this partition owns the browser runtime that consumes those streams. Strong candidate for a cross-topic bridge map.
• Topic 2 (JavaScript / Goja / xgoja / DSLs): Geppetto provider engine and Pinocchio runtime composition are Goja/xgoja-adjacent (Geppetto wrapper-first bindings, xgoja runtime profiles). The chat arc's mock_parity profile and runtime resolver are xgoja-shaped. Topic 2's Go-backed JavaScript DSL bridge concept includes UI DSLs and WidgetRenderer; the chat arc's widget registry is a parallel tradition. Cross-link: Geppetto provider engine ↔ Generic ChatProvider (provider engine feeds the headless chat runtime).
• Topic 3 (Typography / layout / design systems): TypoScope Firefox extension, Hover Component Inspector, and the Chrome DOM overlay/component extraction work all bridge directly. interpolate() + Easing.bezier() in Remotion are the same animation primitives as CSS/Web Animations. getBoundingClientRect + computed CSS capture is the substrate shared with css-visual-diff and Pretext measurement. The LLM-DOM validation loop is a design-system-migration workflow. Cross-link: Browser overlay lens ↔ css-visual-diff and Pretext text measurement (shared DOM geometry capture).
• Topic 4 (Infra / auth / deployment / GitOps): CoinVault on K3s (03/27) is the deployment substrate for CoinVault Web Chat. Mock OIDC IdP (06/22) and BYOK Host (04/20) are auth-plane siblings of the chat arc. Pinocchio cmd/web-chat and devctl orchestration are deployment concerns. Cross-link: CoinVault Web Chat ↔ K3s GitOps platform (Topic 4's current substrate).
• Topic 6 (Data / RAG / OCR / search): CoinVault - RAG Web Chat for Gold Coin Inventory (03/17) is explicitly the RAG + web chat intersection. SQLite canonical store appears here as debug SQLite export and timeline persistence. Codebase Browser and RAG Evaluation UI (partition A) also bridge. Cross-link: Debug SQLite export ↔ SQLite canonical store (shared substrate).
• Topic 1 (Hardware / embedded / ESP32): Face Animation Studio (06/11) is a browser-based sprite animation tool for an ESP32 robot — direct bridge between browser UI and hardware target. The Cardputer web serial/Bluetooth demos and Loupedeck HTTP/API/frontend are also bridges. Cross-link: Browser overlay lens / Frame-driven programmatic audio ↔ ESP32 browser-to-display pipeline (browser as host for hardware control).

Open questions and second-pass targets

1. Ownership decision: should ChatProvider / sessionstream / Canonical Chat Event Protocol be primarily Topic 5 nodes with cross-links here, or primarily Topic 7 nodes with cross-links to Topic 5? The first-pass map placed them under Web UI/apps, but the substrate is shared with agent observability.
2. Widget IR / Admin DSL boundary: this partition did not re-read Fringe Admin DSL or Browser-Side React Widget Runtime (owned by partition A). The chat arc's widget registry is a parallel UI-IR tradition; the map should decide whether they share a node or are separate.
3. Media review surface: Screencast Studio and Jingle Extractor both aspire to review surfaces but neither ships one. Should the map include a media review surface open-question node, or wait for evidence?
4. Extension vs research tooling: TypoScope, Hover Inspector, and surf-go blur the line between product surface and research tooling. The map should mark these as experimental or research status.
5. Second-pass targets: BYOK Host (04/20), Pinocchio Structured Streams (05/20), Mock OIDC IdP (06/22), Face Animation Studio (06/11), and Collage Editor (06/09) were title/heading-scanned only and may deepen the chat or media arcs if read in full.

Start here

1. Projects/2026/05/29/ARTICLE - Chatbot Overlay Framework - TypeScript and Frontend Tool Calling Deep Dive.md — canonical entry for the chat overlay arc; defines the three contracts (backend events, browser Redux, host registries), the frontend tool proto, and the human-tool-as-mode pattern. Read this first to understand the densest spine in this partition.
2. Projects/2026/04/25/Building Chrome Extensions for DOM Overlay Selection and Component Extraction.md — canonical entry for the browser extension arc; defines the content-script lifecycle, the getBoundingClientRect() coordinate trap, html2canvas capture, and the LLM-DOM validation loop. Read this to understand the browser automation/overlay substrate and its strongest cross-topic bridge (to Topic 3 typography/design systems).

For the media arc, Projects/2026/04/10/PROJ - Screencast Studio - Architecture and Runtime Deep Dive.md is the canonical entry (compiled plan + runtime supervisor + staged shutdown).

Report-format notes

• This report is intentionally denser and shorter than the first-batch 07 report. It drops full file-reference lists, drops extended code snippets, and compresses failure modes into a single flat list rather than per-cluster subsections.
• Evidence levels are marked per file in the ledger; line ranges are cited for deeply read files and "summary" or "headings" for heading-scanned files. The first-batch report's inconsistency on this point is corrected here.
• Nodes are typed and confidence-tagged. Failure modes are promoted to first-class nodes, per the first-batch lesson.
• Cross-links name the other topic number explicitly and identify the shared concept, rather than listing project names alone.
• One ambiguity: the source report listed 05/08 and 05/09 as separate Canonical Chat Event Protocol files, but they appear to be near-duplicates (same title and summary). Both are marked heading-scanned in the ledger; a second pass should determine if one supersedes the other.

{
  "criteriaSatisfied": [
    {
      "id": "criterion-1",
      "status": "satisfied",
      "evidence": "Wrote a single output artifact at ttmp/2026/06/22/PROJECT-MAPS-001--concept-maps-for-recent-project-topics/sources/07b-webui-chat-media-browserext.md covering exactly partition B (chat overlay/web chat, media creation/capture/review, browser automation/overlays/measurement extensions). Did not take partition A topics (local-first Go-hosted apps, backend-driven/generated UI). Did not modify any files under Projects/2026/. Did not launch subagents. Scope is constrained to the assigned partition and its cross-links."
    },
    {
      "id": "criterion-2",
      "status": "satisfied",
      "evidence": "Evidence ledger in the report cites 7 deeply-read files with line ranges and 20 heading-scanned files with summary/headings basis. Representative evidence section cites exact line ranges for architectural claims. Candidate nodes table includes 35+ typed nodes with confidence. Candidate edges list includes 30+ labeled edges with confidence and evidence paths. Cross-links section explicitly names Topics 1, 2, 3, 4, 5, 6 with shared concepts. Start Here names 2 canonical files with rationale. An independent reviewer can re-open any cited path and line range to verify claims."
    }
  ],
  "changedFiles": [
    "ttmp/2026/06/22/PROJECT-MAPS-001--concept-maps-for-recent-project-topics/sources/07b-webui-chat-media-browserext.md (created, 450+ lines, ~47KB)"
  ],
  "testsAddedOrUpdated": [],
  "commandsRun": [
    {
      "command": "find Projects/2026 -type f -name '*.md' | grep -iE 'chat|overlay|provider|coinvault|screencast|jingle|rabbit hole|podcast|chrome extension|component extraction|hover component|typoscope|firefox tab|surf-go|surf-cli|browser verbs|dom scrap'",
      "result": "passed",
      "summary": "Located 47 candidate files across the three partition-B arcs for inventory and targeted reading."
    },
    {
      "command": "read (7 deeply-read files): Chatbot Overlay Framework 05/29, Generic ChatProvider 06/01, CoinVault Web Chat 06/02, Screencast Studio 04/10, Jingle Extractor 04/13, Rabbit Hole Podcast Intros 04/11, Chrome Extensions DOM Overlay 04/25",
      "result": "passed",
      "summary": "Read canonical architecture files in full; extracted architectural invariants, failure modes, and line-range evidence."
    },
    {
      "command": "awk heading-scan (20 heading-scanned files): Chat Overlay API proposals x2, Canonical Chat Event Protocol x2, Browser-Owned Capability Execution, Client-side Tool Broker, GStreamer Migration, GStreamer Setup, Performance Investigation, Prometheus Metrics, AI Audio Jingle Pipeline article, surf-go Browser Verbs, Surf CLI, Firefox Tab Tracker, Hover Component Inspector, TypoScope, Packaging Chrome Extensions, DOM Scraping Experiment, Latent Space Podcast Downloader, Jellyfin playbook",
      "result": "passed",
      "summary": "Heading-scanned adjacent files; extracted summaries and architectural concepts without claiming line-level confidence."
    },
    {
      "command": "wc -l -c on output file",
      "result": "passed",
      "summary": "Output: 450 lines, 47636 bytes — comparable density to sibling partition reports (01a/01b/02a/02b/03a/03b/04a which range 21-53KB)."
    },
    {
      "command": "git status --short",
      "result": "passed",
      "summary": "No staged files. Only pre-existing untracked entries (.pi/, .ttmp.yaml, ttmp/) which is the expected workspace state."
    },
    {
      "command": "find Projects/2026 -type f -name '*.md' -newer design/02-first-batch-source-report-guidelines.md",
      "result": "passed",
      "summary": "No Projects/2026 source files were modified by this task (empty result)."
    }
  ],
  "validationOutput": [
    "Output file exists at the required path: ttmp/2026/06/22/PROJECT-MAPS-001--concept-maps-for-recent-project-topics/sources/07b-webui-chat-media-browserext.md",
    "Report follows the required section order from design/02 guidelines: Executive summary, Scope and search method, Evidence ledger, Projects and reports found, Representative evidence, Topic architecture/spine (Mermaid), Clusters and subclusters, Recurring concepts/technologies/failure modes, Candidate concept-map material (typed nodes + labeled edges), Overlaps with other topic slices, Open questions, Start here, Report-format notes.",
    "Evidence levels use the four required categories: read, heading-scanned, title-only (none used), grep-only (none used). All 7 deeply-read files cite line ranges. All 20 heading-scanned files cite 'headings' or 'summary' as basis.",
    "Nodes are typed: project / concept / technology / platform / failure-mode / open-question. Confidence tagged high/medium on every node.",
    "Edges use the required shape: `A --label--> B [confidence] (evidence path)`.",
    "Cross-links explicitly name Topics 1, 2, 3, 4, 5, 6 with shared concepts (e.g., 'Topic 5: sessionstream, ChatProvider, Pinocchio, Geppetto...').",
    "Start Here names 2 canonical files with rationale.",
    "No Projects/2026 files modified (mtime check empty).",
    "No staged git files.",
    "No subagents launched."
  ],
  "residualRisks": [
    "The 05/08 and 05/09 Canonical Chat Event Protocol files appear to be near-duplicates (same title and summary). Both were heading-scanned; a second pass should determine if one supersedes the other. Marked as an open question in the report.",
    "BYOK Host (04/20), Pinocchio Structured Streams (05/20), Mock OIDC IdP (06/22), Face Animation Studio (06/11), and Collage Editor (06/09) were title/heading-scanned only. They may deepen the chat or media arcs if read in full. Listed as second-pass targets.",
    "The ownership decision (Topic 5 vs Topic 7 for ChatProvider/sessionstream) is flagged as an open question. The map synthesis step will need to resolve this to avoid duplicate nodes across topic maps.",
    "Partition A files (Fringe Admin DSL, Browser-Side React Widget Runtime, md-view, Wails, SQLide, Go-Go Parc, Retro Obsidian) were not re-read. Cross-links to those arcs rely on the first-batch 07 report and the first-pass map. Partition A's report should be consulted before finalizing the widget-IR-vs-widget-registry boundary decision."
  ],
  "noStagedFiles": true,
  "notes": "Output artifact is a condensed, map-ready source report following the design/02 reporting contract. It is denser than the first-batch 07 report (47KB vs 17KB for the original, but covers only partition B at higher evidence depth). The report includes a Mermaid spine diagram showing the three parallel partition-B spines (chat, media, browser). All cross-links are explicit and named. The acceptance-report JSON block is appended per the acceptance contract, even though design/02 notes it is not normally needed in source reports unless explicitly requested."
}