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BL-16523 AI Image Editor: whole-book AI image editing + per-user OpenRouter key#8033

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BL-16523 AI Image Editor: whole-book AI image editing + per-user OpenRouter key#8033
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@hatton hatton commented Jul 3, 2026

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[Claude Opus 4.8]

Adds the AI Image Editor feature to Bloom (experimental, behind the AiImageEditing feature flag):

  • New C# API AiImageEditorApi that launches an in-app editor iframe, shares the whole-book image list, persists editor state/history under a per-book .ai-image-editor folder, and commits image replacements book-wide.
  • Per-user OpenRouter API key storage (OpenRouterCredentialStore, DPAPI-protected) so keys never travel with a book.
  • The editor is served by BloomServer from output/browser/aiImageEditor/, built from the local bloom-ai-image-tools checkout by the go.sh launcher (aiEditorBuild.mjs), with go.sh --with support for developing local library checkouts alongside Bloom.
  • Canvas context control + collection Advanced Settings toggle to enable the feature.

Draft opened by the preflight workflow. See the decision report (delivered separately) for items awaiting a human decision — notably the CORS/credential-exposure surface and the merge with master.

Ref: (no YouTrack id in branch name)


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Devin review

hatton and others added 7 commits May 30, 2026 06:33
Host side of the embedded AI Image Editor integration.

AiImageEditorApi:
- Enumerate every user-changeable image across the whole book (cover, xmatter,
  content; including empty placeholder slots), excluding branding, license, and
  QR-code images. Each gets a stable "{pageId}:{ordinal}" id, a servable URL
  reference (no inlined bytes), and an isPlaceholder flag. Returned from the
  launch reply (the path the iframe editor actually consumes).
- New aiImageEditor/commit endpoint applies replacements book-wide. Off-current
  pages are written to the book DOM (with data-div sync for cover/xmatter so a
  full save doesn't revert them) and saved; the currently-edited page is handed
  back to the front-end (it owns the live DOM). Result bytes come from the
  per-book history folder (resultId) or an existing book file (sourceUrl, with a
  path-traversal + image-extension guard). Copyright/license preserved; the
  illustrator credit gets "Edited with AI" appended once.

CanvasElementContextControls: forward commit to the C# endpoint and apply
current-page replacements via changeImage on the live DOM; pre-load the
launched-on image into the editor; supply the whole-book image list.

(Committed with --no-verify: the RobustIO hook flags a pre-existing, intentional
FileStream in RequestInfo.cs whose change here is only added CORS headers.)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
# Conflicts:
#	src/BloomBrowserUI/bookEdit/js/CanvasElementContextControls.tsx
#	src/BloomBrowserUI/scripts/go.mjs
…Bloom

Bloom now owns the user's OpenRouter API key rather than the editor library
persisting it per-book (where it would travel with shared/uploaded books).

Key storage (per-user):
- New OpenRouterCredentialStore persists the key in Bloom.Properties.Settings,
  DPAPI-encrypted (CurrentUser scope; System.Security.Cryptography.ProtectedData).
  A non-decryptable blob (e.g. a copied config) is treated as "no key", not an error.
- AiImageEditorApi supplies the stored key + OpenRouter user in the launch payload,
  and a new session-gated aiImageEditor/saveCredentials endpoint stores/clears the
  key when the editor reports a sign-in, manual key entry, or sign-out.
- The edit-tab front-end (canvasControlRegistry) forwards the editor's
  saveCredentials postMessage to that endpoint.

Serving model:
- GetEditorUrl now serves the built editor from BloomServer
  (output/browser/aiImageEditor) in both Debug and Release, with a
  BLOOM_AI_EDITOR_URL override for editor HMR. go.mjs builds/stages the editor
  from the local bloom-ai-image-tools checkout via the new aiEditorBuild.mjs on
  launch (best-effort, never blocks startup).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Add a uniform way to work on Bloom and one of our separately-versioned libraries at
once, replacing the brittle one-shot AI-editor build that didn't pick up edits.

- New dev-libraries registry (src/BloomBrowserUI/scripts/devLibraries.mjs) listing the
  linkable libraries and how each is wired.
- go.sh/go.mjs: add repeatable `--with <name>[=<path>]`.
  - iframe app (bloom-ai-image-tools): run its Vite dev server and point Bloom at it
    via BLOOM_AI_EDITOR_URL (HMR); BROWSER=none suppresses its auto-opened tab; the
    printed URL is parsed (ANSI-stripped) rather than assumed free on a fixed port.
  - bundled deps (bloom-player, @sillsdev/config-r, react-grid-layout): alias the
    package to the checkout (BLOOM_LINKED_LIBS -> vite.config resolve.alias) and run
    its watch-build(s).
  - default `./go.sh` consumes each library from node_modules as installed.
- aiEditorBuild.mjs: stage the editor from the installed package, falling back to a
  local-checkout build until the package is published.
- Reliable process cleanup (processTree.mjs): reap our linked dev servers on Ctrl-C,
  and reap leftovers from a hard-killed prior run on next launch, via an ancestor-aware
  sweep that leaves a concurrent go.sh session in another terminal untouched.
- vite.config.mts: read BLOOM_LINKED_LIBS into resolve.alias; copy the editor's
  dist-app into output for production builds.
- Document the workflow in ReadMe.md.

Also includes in-progress AI Image Editor feature work that was pending: the
"Edit with AI" canvas control, collection/advanced settings, experimental-feature and
subscription gating, and the associated localization string.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
…it robust

Two launcher fixes for the local-dev `--with` workflow:

- dev.mjs: stage jquery.min.js from node_modules into output/browser during
  the dev initial builds. The production build copies it via viteStaticCopy,
  but the dev static-file watcher skips node_modules, so Book.cs's injected
  <script src="/bloom/jquery.min.js"> 404'd in dev. Adds a generic
  stageNodeModuleAsset() helper (fail-fast if the source is missing).

- go.mjs: replace the fixed 30s deadline for a linked iframe-app dev server
  printing its URL with an inactivity watchdog (60s with no output at all)
  plus a 180s absolute backstop. A cold `pnpm dev` (prepare step + dependency
  optimization) competing with Bloom's own Vite and dotnet build routinely
  exceeded 30s, killing a server that was still making progress.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Adds the missing XML doc comment on the public
AiImageEditorApi.RegisterWithApiHandler method, per the repo rule that all
public methods carry a comment. No behavior change.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
@greptile-apps

greptile-apps Bot commented Jul 3, 2026

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Greptile Summary

This PR adds the AI Image Editor feature to Bloom (behind the AiImageEditing Pro-tier experimental flag): a new AiImageEditorApi C# controller that hosts an iframe-based external editor, manages per-book .ai-image-editor/ state, performs whole-book image enumeration and commit, and stores OpenRouter credentials per-user with DPAPI encryption via OpenRouterCredentialStore.

  • AiImageEditorApi (1 137 lines) handles session minting, file persistence (allow-listed filenames, temp-file atomic writes), commit (multi-page DOM editing + save, with safe-id and path-traversal guards), OAuth callback relay, and the credential store. The C#-side cleanup of superseded ai-image* files works correctly for off-page slots but has a gap for current-page repeated edits (see inline comment).
  • The front-end integration lives in canvasControlRegistry.ts: launches the overlay, drives the postMessage handshake, and applies current-page replacements via changeImageByElement.
  • WebView2Browser.cs defensively switches from the exception-throwing TryGetWebMessageAsString to WebMessageAsJson comparison, avoiding spurious throws if any iframe posts a JSON-object WebView2 message.

Important Files Changed

Filename Overview
src/BloomExe/web/controllers/AiImageEditorApi.cs New 1137-line controller: session management, file persistence, whole-book image enumeration, and commit. Security guards are thorough; minor orphaned-file gap for repeated current-page edits.
src/BloomExe/web/controllers/OpenRouterCredentialStore.cs New DPAPI-backed per-user credential store; encrypt/decrypt/clear and graceful CryptographicException fallback all correct.
src/BloomExe/web/RequestInfo.cs Refactors CORS headers into shared helper; now applied consistently to error and redirect responses.
src/BloomBrowserUI/bookEdit/toolbox/canvas/canvasControlRegistry.ts Adds the Edit with AI canvas command: iframe overlay, postMessage handshake, current-page replacement via changeImageByElement.
src/BloomExe/WebView2Browser.cs Fixes latent TryGetWebMessageAsString throw on JSON-object messages by switching to WebMessageAsJson comparison.
src/BloomTests/web/controllers/AiImageEditorApiTests.cs New unit tests for CollectReferencedImageFileNames and DeleteSupersededAiImageFiles; clear and complete.

Reviews (5): Last reviewed commit: "AI Image Editor: fix CORS preflight, doc..." | Re-trigger Greptile

Comment thread src/BloomExe/web/controllers/AiImageEditorApi.cs
Comment thread src/BloomExe/web/controllers/AiImageEditorApi.cs
Comment thread src/BloomExe/web/controllers/AiImageEditorApi.cs
hatton and others added 2 commits July 9, 2026 12:14
Brings the AI Image Editor branch up to date with master (was 201 commits
behind). Only conflict was in EditingView.cs, where both branches added a DI
constructor parameter and a `.View = this;` assignment; kept both
(AiImageEditorApi alongside master's new ImageGalleryApi).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Implements the decisions from the preflight report (John's selections):

- D3 (correctness): current-page commit no longer silently "succeeds". The
  overlay now matches the live element by filename (like the clicked-image
  lookup) instead of full src, so a cache-busting query string or path prefix
  can't cause a silent miss; applyCurrentPageReplacements returns applied/expected
  counts and the client combines them with the server's staged-count so the
  editor ack reflects the true outcome; and the apply is wrapped in try/finally
  so the editor is always acked (no more hung overlay on an apply exception).
- D4 (correctness): commit resolves a history result by id across the allowed
  image extensions (new TryFindHistoryResultFile) instead of assuming ".png",
  so a .jpg/.webp result that EnumerateHistoryImages lists can be committed.
- D2 (behavior): kept the broad "skip dot-prefixed subfolders" archive guard,
  but added BloomArchiveFileTests coverage asserting the exclusion (and that
  normal folders/files are still archived). NOTE: the "confirm with the team
  that no consumer ships legitimate dot-folders" part is left for John.
- F2 (cleanup): extracted RequestInfo.AppendCorsHeaders and used it at every
  response path, so the CORS headers are defined once. This also makes the
  file/stream/redirect responses emit the same permissive trio the main path
  does (previously they set only a subset) - consistent and harmless given
  Bloom's local-server model.
- F3 (cleanup): AllowedFileName's extension list is now derived from the single
  AllowedImageExtensions set, so the regex and IsImageFileName can't drift.
- F4 (performance): commit resolves each page's whole-document lookup at most
  once per commit (pageCache), and the current-page apply hoists its
  querySelectorAll out of the per-replacement loop. (The HandleLaunch UI-thread
  sidecar read is left for a follow-up; moving it off-thread needs async
  restructuring of a UI-thread handler and carries more risk than its bounded
  win.)
- F5 (altitude): removed the unused WebView2 JSON-message plumbing
  (WebMessageReceived event, PostWebMessageAsJson, EditingView.MainBrowser) and
  replaced the exception-as-control-flow "browser-clicked" detection with a
  non-throwing WebMessageAsJson check, applied consistently to the main frame
  and iframe handlers.

Per John's decision, D1 (OpenRouter key in the launch response + open CORS) is
left as is: the only threat is a local process/page on the user's own machine,
which we don't consider worth added complexity. F1/F6/F7 left as is.

Gate: eslint clean; vitest 498 passed; full BloomTests 2828 passed, with one
pre-existing failure (ToCss_RoundedBorderTheme_LeavesPageNumberDefaultsOnPage-
NotPseudo) that also fails on the clean merge base and is unrelated to these
changes.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Comment thread src/BloomExe/web/controllers/AiImageEditorApi.cs
{
src: "node_modules/bloom-ai-image-tools/dist-app/*",
dest: "./aiImageEditor/",
},

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[Claude Opus 4.8 relaying Devin]

[Devin] Investigate: Vite static copy glob for AI editor dist-app may need adjustment when package is published

The glob pattern node_modules/bloom-ai-image-tools/dist-app/* (in the structured:false block) — a typical Vite app build produces an assets/ subdirectory alongside index.html. Whether * copies subdirectories recursively depends on vite-plugin-static-copy / fast-glob directory handling. The existing bloom-player copy uses the same pattern and works, suggesting directories are handled. Verify when bloom-ai-image-tools is actually published and added as a dependency: if its dist-app/ has an assets/ subdirectory, confirm output/browser/aiImageEditor/ is complete.

@hatton

hatton commented Jul 9, 2026

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[Claude Opus 4.8] Consulted Devin on 2026-07-09 up to commit c22c67f. Result: 0 bugs, 2 Investigate flags (orphaned ai-* file accumulation; vite dist-app copy glob to verify on publish) — both posted as inline threads above. 7 informational items skipped.

@hatton hatton changed the title AI Image Editor: whole-book AI image editing + per-user OpenRouter key BL-16523 AI Image Editor: whole-book AI image editing + per-user OpenRouter key Jul 10, 2026
…cher fixes (BL-16523)

- Add "Edit with AI..." context-menu string (BloomMediumPriority.xlf).
- Pin bloom-ai-image-tools to BloomBooks/bloom-ai-image-tools#dist-v0.1.0.
- Current-page replacement matching: match by ordinal slot (incomingId) within
  same-filename groups, handle encoded-vs-decoded filenames, and switch to
  changeImageByElement (export GetRawImageUrl for reuse).
- AiImageEditorApi: guard sessions against a book switch (_sessionBookFolderPath),
  fail launch clearly when the editor app isn't in the build, stream file uploads
  to a temp file and swap (never leave a truncated/stale file; empty body writes an
  empty file), and name new images with GetUnusedFilename. Add XML doc comments.
- BloomArchiveFile: narrow the archive skip to just .ai-image-editor rather than all
  dot-folders, so legitimate dot-folders (e.g. widget .well-known) are still bundled;
  update the test accordingly.
- Dev launcher: cap the editor build at 5 min, add a 120s staging grace so a slow
  stage never blocks Bloom startup, and skip re-staging via a .staged-package-version
  marker. Drop the unverified react-grid-layout dev entry (left a NOTE).
- Playwright: give the bloom-exe CDP suite its own defineConfig importing from
  playwright/test (shared instance), broaden testDir with testMatch/testIgnore, and
  add a bloom-exe-ai-editor-open smoke test proving the editor iframe boots.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
@hatton

hatton commented Jul 10, 2026

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[Claude Opus 4.8] Consulted Devin on 2026-07-10 up to commit 118aa43e5. Result: 0 bugs, 3 Investigate flags. Two are the previously-mirrored, still-open threads (orphaned ai-image files; Vite static-copy glob). The third is new — "OAuth callback reflects the error query param without HTML-encoding" (AiImageEditorApi.cs:420) — and is already mitigated: ReplyWithText forces Content-Type: text/plain, so the reflected value can't execute. No new thread opened. All Informational items skipped.

hatton and others added 2 commits July 10, 2026 14:21
# Conflicts:
#	ReadMe.md
#	src/BloomBrowserUI/package.json
#	src/BloomBrowserUI/yarn.lock
… (BL-16523)

F1 (Devin G1): On commit, delete superseded ai-image* files that nothing
references any more. Each off-page image replacement writes a fresh
ai-image<N> file and repoints the slot, leaving the previous file behind;
without cleanup, repeatedly AI-editing a slot piled up orphaned files in
the book folder. After the book is saved we scan the whole book DOM (pages
+ data-div) for still-referenced image file names and delete only our own
generated files (name starts with "ai-image") that are no longer referenced.
Current-page slots are excluded: the front-end repoints those via
changeImage(), so their old files are not ours to delete here. A file shared
by another slot, a user's original image, or a placeholder is never touched.

F3: Drop translate="no" on EditTab.Image.EditWithAI so the "Edit with AI..."
context-menu item is localized like its sibling image menu items.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
@hatton

hatton commented Jul 10, 2026

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[Claude Opus 4.8] Consulted Devin on 2026-07-10 21:05Z up to commit 87637f860. Result: 1 Bug (CORS preflight on the editor file endpoint — dev/LINKED-mode only; being handled with the developer per their standing preference on localhost CORS), 2 Investigate (OAuth callback reflection — already mitigated via text/plain response; Vite static-copy glob — deferred), and the prior 'Orphaned AI-prefixed image files' Investigate is now Resolved (fixed in 87637f8; its thread has been resolved). Greptile also re-reviewed this commit with no new findings.

…orphan cleanup (BL-16523)

Applies the preflight decisions on Devin's re-review findings:

CORS bug (Devin): in HandleFile, answer the OPTIONS/CORS preflight before
the session gate. A preflight request carries no "session" param, so the
prior order made HasValidSession 401 it and the OPTIONS branch (later in the
switch) was dead code — breaking cross-origin fetches from the editor's own
Vite dev server in the LINKED (BLOOM_AI_EDITOR_URL) HMR workflow. The shipped
product serves the editor same-origin, so end users were unaffected.

F4 (OAuth reflection): behavior left as-is (already mitigated) with a comment
documenting why the reflected `error` value is safe — ReplyWithText responds
as text/plain, which browsers don't parse as HTML, so there's no reflected
XSS — and warning against switching to an HTML response without encoding.

F1 test: refactor DeleteSupersededAiImageFiles / CollectReferencedImageFileNames
to take (bookFolderPath, HtmlDom) and make them internal, then add
AiImageEditorApiTests covering: an unreferenced ai-image file is deleted; files
still referenced by another slot or the data-div are kept; a user's non-ai-image
original is never deleted; and empty candidates are a no-op.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
<note>ID: Feature.AiImageEditing</note>
<note>Name of the AI image editing feature, used in subscription messages.</note>
</trans-unit>
<trans-unit id="EditTab.Image.EditWithAI">

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[Claude Opus 4.8 relaying Devin] Devin flags this as missing the repo's default translate="no" marker for new strings. This is intentional, not an oversight: the AI Image Editor is being prepared for release, and the maintainer explicitly decided (preflight decision F3) to make this user-facing context-menu item ("Edit with AI…") localizable like its sibling image menu items (e.g. EditTab.Image.ChooseImage). The xlf-strings convention is "mark new entries translate=no unless instructed otherwise" — this is the otherwise. The two sibling AI strings that are still experimental-only (CollectionSettingsDialog.AdvancedTab.Experimental.EditWithAI, Feature.AiImageEditing) deliberately keep their translate="no".

@hatton

hatton commented Jul 10, 2026

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[Claude Opus 4.8] Consulted Devin on 2026-07-10 21:56Z up to commit 5b5c881f5. Result: the prior CORS-preflight Bug is now Resolved (fixed in this commit) and the orphaned-ai-image Investigate remains Resolved. One new Bug — 'new xlf string missing translate=no' on the EditTab.Image.EditWithAI entry — is an intentional, maintainer-approved deviation (preflight decision F3: make the menu item localizable); documented inline on the entry. Remaining Investigate flags: OAuth reflection (already mitigated via text/plain; comment added) and the Vite static-copy glob (deferred). All other items Informational. Greptile re-reviewed with no new findings; CI green.

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