Session ses_2d5ec50c

task_id: ses_2d5ec225dffenIH3jCXUQXknlH (for resuming to continue this task if needed)

<task_result>
Now I have a complete picture of the entire extension. Here's a thorough analysis:

---

## Complete Extension Architecture Analysis

### 1. Polling Logic (`background.js` — `pollAndEnrich()`)

**Trigger mechanism:** An alarm named `"readwise-poll"` fires every **2 minutes** (`POLL_INTERVAL_MINUTES`). The alarm is set up at init (IIFE at bottom of `background.js`) and managed by `ensurePollerRunning()`.

**Poll flow:**
1. **Guard checks** — Exits immediately if no token is stored or `pollingEnabled` is `false`.
2. **Fetch recent docs** — Calls `listDocuments()` with:
   - `updatedAfter` = now minus **24 hours** (`LOOKBACK_WINDOW`)
   - `maxPages: 5` (up to 500 docs, 100 per page)
   - `withHtmlContent: true` — critically important, fetches the stored HTML so paywall markers can be inspected
3. ...

task_id: ses_2d5ec1105ffe4LfB0DiGcUHSRl (for resuming to continue this task if needed)

<task_result>
I don't have direct access to the Readwise API token — it's stored in the Firefox extension's `browser.storage.local` and the opencode MCP uses OAuth (not a stored token file). 

Here's what I've prepared and what I found from the code analysis:

---

## Investigation Results

### What I Created

I wrote a comprehensive investigation script at **`investigate-duplicates.mjs`** that you can run with:

```bash
READWISE_TOKEN=xxx node investigate-duplicates.mjs
```

Get your token from https://readwise.io/access_token. The script will:

1. **Find the specific article** `01kmksxt44sa5y6kdexjp7xfvg` and any related docs
2. **Find duplicate titles** — same title appearing multiple times
3. **Find duplicate URLs** — exact same `source_url` appearing multiple times  
4. **Find near-duplicate URLs** — same article via different domains (e.g., `click.e.economist.com/...` vs ...

...86770 bytes truncated...

The tool call succeeded but the output was truncated. Full output saved to: /home/byk/.local/share/opencode/tool-output/tool_d2a18bb9500167h3PMIRX2LNeL
Use the Task tool to have explore agent process this file with Grep and Read (with offset/limit). Do NOT read the full file yourself - delegate to save context.

[{"document_id":"01gmg0v0bx4cdmqrta07nfxnyp","title":"GitHub Codespaces vs Gitpod – Full Stack Development Moves to the Cloud","author":"freeCodeCamp.org","tags":["favorite"],"category":"article","matches":[{"chunk_id":"7967880-8-7779284","plaintext":"rIv3ade5u-A027pXxPZ7K-zn--ddFchT3EbjTS-XzYD35jFZ5E-MdefIc3gch2Y5xLvSy6udUuCfWkL-CFZvlvNSkjwrun3MqwjO7ZH98qHrcyQ1HcWm7P7obCqSwVZhulNd1pLS=s0"}],"url":"https://read.readwise.io/read/01gmg0v0bx4cdmqrta07nfxnyp"},{"document_id":"01k47pja1rhrtydtv7xd1vzc8n","title":"LLMs Get Lost In Multi-Turn Conversation","author":"arxiv.org","tags":[],"category":"article","matches":[{"chunk_id":"304573091-152-331216136","plaintext":"[h] User simulator You are simulating a user of an interactive LLM system (like ChatGPT). The user is inherently lazy, and answers in short form, providing only minimal information to the system. You should not be proactive. ...

task_id: ses_2d5e71636ffe2yN3ZoJb7XE9Wn (for resuming to continue this task if needed)

<task_result>
Here's the comprehensive analysis of the 100 Readwise Reader documents:

---

## 1. EXACT DUPLICATE ARTICLES (same title, same source URL)

There are **3 pairs of true duplicates** — articles created by `readwise-full-content` within milliseconds of each other with identical source URLs:

### Pair A: "Opinion | America's leaders should move beyond 'try harder' to fix health crisis"
| Field | Copy 1 | Copy 2 |
|---|---|---|
| **ID** | `01kmkvt803zta0c6v8435txbd1` | `01kmkvt7zfjk7a9r8t6sw6g4af` |
| **Words** | 84 ⚠️ | 84 ⚠️ |
| **Saved** | 2026-03-26T01:23:19.**171** | 2026-03-26T01:23:19.**149** |
| **Source URL** | washingtonpost.com/.../chronic-diseases-health-policy/ | identical |
| **Source** | readwise-full-content | readwise-full-content |

### Pair B: "Nashville comic's fake ICE tip line exposes teachers reporting kids"
| Field | Copy 1 | Copy 2 |
|---|---|---|
| **ID** | ...

{"count":1,"nextPageCursor":null,"results":[{"id":"01kmksxt44sa5y6kdexjp7xfvg","url":"https://read.readwise.io/read/01kmksxt44sa5y6kdexjp7xfvg","title":"The Epstein files have brought a wave of resignations and investigations - The Washington Post","author":"Maegan Vazquez, Sammy Westfall","source":"readwise-full-content","category":"article","location":"later","tags":null,"site_name":null,"word_count":65,"reading_time":"1 min","created_at":"2026-03-26T00:50:18.928806+00:00","updated_at":null,"published_date":null,"summary":null,"image_url":null,"content":null,"source_url":"https://www.washingtonpost.com/politics/2026/02/17/epstein-files-resignations-investigations/?utm_campaign=wp_must_reads&utm_medium=email&utm_source=newsletter","notes":null,"parent_id":null,"reading_progress":null,"first_opened_at":null,"last_opened_at":null,"saved_at":"2026-03-26T00:50:18.884000+00:00","last_moved_at":null,"html_content":null,"is_deleted":null}]}

<path>/home/byk/Code/readwise-full-content/extension/background.js</path>
<type>file</type>
<content>1: /**
2:  * Background script — polls Readwise for thin/paywalled documents and
3:  * enriches them with full page content by loading them in background tabs.
4:  */
5: 
6: // ============================================================================
7: // Constants
8: // ============================================================================
9: 
10: /** Poll interval in minutes */
11: const POLL_INTERVAL_MINUTES = 2;
12: 
13: /**
14:  * Documents with fewer words than this are always candidates for enrichment.
15:  * This catches obvious stubs that have very little content.
16:  */
17: const LOW_WORD_COUNT = 200;
18: 
19: /**
20:  * Documents above this word count are never enriched (assumed complete).
21:  * Between LOW and HIGH, we check for paywall markers in the HTML. ...

<path>/home/byk/Code/readwise-full-content/extension/readwise.js</path>
<type>file</type>
<content>1: /**
2:  * Readwise Reader API client.
3:  *
4:  * Shared between background.js and popup.js.
5:  */
6: 
7: const READWISE_BASE = "https://readwise.io/api";
8: 
9: /**
10:  * Get the stored Readwise token.
11:  */
12: async function getToken() {
13:   const { readwiseToken } = await browser.storage.local.get("readwiseToken");
14:   return readwiseToken || null;
15: }
16: 
17: /**
18:  * Validate a Readwise token.
19:  * Returns true if valid (204), false otherwise.
20:  */
21: async function validateToken(token) {
22:   try {
23:     const res = await fetch(`${READWISE_BASE}/v2/auth/`, {
24:       headers: { Authorization: `Token ${token}` },
25:     });
26:     return res.status === 204;
27:   } catch {
28:     return false;
29:   }
30: }
31: 
32: /**
33:  * Fetch recent documents from Readwise Reader. ...

c26b405 chore: bump version to 1.1.1
0d3e85b fix: paginate document listing so older articles aren't missed
999b3f6 chore: bump version to 1.1.0
a895872 fix: disable tab-based extraction on Android Firefox
462a804 Fix background page getting destroyed during enrichment
0a24b47 Fix document replacement when URL dedup blocks creation
aaa435b Don't offer to save readwise.io pages
3b8e85f Skip archived documents during background enrichment
01d0e94 Try invisible fetch() before falling back to visible background tabs
4ad094a Add 'Re-check all recent articles' button to clear cache and re-poll
e1248dc Detect paywall markers instead of relying solely on word count
6204868 Fix enrichment for redirect URLs and raise word count threshold
4925a16 Add data_collection_permissions and fix cleanUrl shadowing
c7bb9b3 Add GitHub Actions release workflow (GitHub Releases + AMO)
d2b18bf Initial release: Firefox extension for Readwise Reader full content enrichment

[{"document_id":"01je13q79p9wn8s5myvvcc505g","title":"","author":"baekdal.com","tags":[],"category":"article","matches":[{"chunk_id":"244899849-30-454510669","plaintext":"Exclusive reports for media executives\nexecutive\nOutlook\nThe future outlook for traditional magazines? \\\n\\\nIn this executive overview, we are going to talk about how the recent market changes impact the future outlook for publishers, and what that means for our future\nexecutive\nSubscriptions/Memberships\nAnalysis: A deeper look at people’s willingness to pay for news \\\n\\\nIn this executive report, we are going to dive deep into the data and the graphs to see what impacts how and why people pay for news.\nexecutive\nAI\nStrategy outlook: Why publishers should block AI search \\\n\\\nAI search is becoming increasingly problematic for publishers. It takes away our traffic, and the overall outlook is such that publishers will never set a net positive from it.\nexecutive\nSubscriptions/Memberships\nNobody ...

task_id: ses_2d5dfb573ffeve3UbJv5z7YVgu (for resuming to continue this task if needed)

<task_result>
Here's a summary of the plan:

## Plan Summary

**5 fixes across 2 files (~63 lines changed), no new files:**

| # | Fix | Priority | Key Insight |
|---|-----|----------|-------------|
| 1 | **Concurrency guard** on `pollAndEnrich()` | Critical | Module-level `isPolling` boolean with `try/finally` — prevents two polls from processing same articles simultaneously |
| 2 | **Mark canonical URL** as processed | Critical | `enrichDocument()` returns `{ success, canonicalUrl }` — both original and redirect URLs get marked, breaking the 3-copy cycle |
| 3 | **Skip self-created docs** (`source === "readwise-full-content"`) | Important | Safety net — even if URL marking fails, we won't re-enrich our own output. Includes defensive check on both `doc.source` and `doc.saved_using` since we need to verify the field mapping |
| 4 | **Paywall check on extracted HTML** with word count | Important | ...

<path>/home/byk/Code/readwise-full-content/extension/background.js</path>
<type>file</type>
<content>265: function shouldEnrich(doc) {
266:   if (doc.word_count < LOW_WORD_COUNT) {
267:     return "low-word-count";
268:   }
269: 
270:   // For medium word count, check the HTML content for paywall markers
271:   const html = doc.html_content || "";
272:   if (html && hasPaywallMarkers(html)) {
273:     return "paywall-detected";
274:   }
275: 
276:   // If no HTML content available from Readwise, be conservative
277:   // and enrich anything under the high threshold from known paywall sites
278:   if (!html && doc.word_count < HIGH_WORD_COUNT) {
279:     return "no-html-available";
280:   }
281: 
282:   return false;
283: }
284: 
285: /**
286:  * Check if HTML content contains paywall / registration markers.
287:  */
288: function hasPaywallMarkers(html) {
289:   const lower = html.toLowerCase();
290:   return PAYWALL_MARKERS.some((marker) => lower.includes(marker.toLowerCase()));
291: ...

User has answered your questions: "Are you running this extension on multiple Firefox instances simultaneously (e.g., desktop + Android, or regular Firefox + Developer Edition)?"="Multiple browsers", "Have you been clicking the 'Re-check all recent articles' button in the popup recently? This could trigger concurrent poll runs that create duplicates."="Yes, I click it". You can now continue with the user's answers in mind.

Wrote file successfully.

User approved switching to build agent. Wait for further instructions.

<path>/home/byk/Code/readwise-full-content/.opencode/plans/1774527426352-shiny-island.md</path>
<type>file</type>
<content>1: # Fix: Duplicate Article Creation in Readwise Full Content Extension
2: 
3: ## Problem
4: Articles appear 2-3 times in Readwise Reader with tiny content (paywall stubs). User runs the extension on **multiple Firefox instances** and uses the **"Re-check all recent articles" button**.
5: 
6: ## Root Causes (confirmed)
7: 
8: ### 1. No concurrency guard on `pollAndEnrich()` → immediate duplicates
9: - Multiple browsers poll independently (separate `browser.storage.local`)
10: - "Re-check" button fires `pollAndEnrich()` without checking if one is already running
11: - Two concurrent runs both see the same article → both call `replaceDocument()` → both create within ms of each other → **exact duplicate pairs** (22ms, 122ms apart in data)
12: 
13: ### 2. ...

<path>/home/byk/Code/readwise-full-content/extension/background.js</path>
<type>file</type>
<content>1: /**
2:  * Background script — polls Readwise for thin/paywalled documents and
3:  * enriches them with full page content by loading them in background tabs.
4:  */
5: 
6: // ============================================================================
7: // Constants
8: // ============================================================================
9: 
10: /** Poll interval in minutes */
11: const POLL_INTERVAL_MINUTES = 2;
12: 
13: /**
14:  * Documents with fewer words than this are always candidates for enrichment.
15:  * This catches obvious stubs that have very little content.
16:  */
17: const LOW_WORD_COUNT = 200;
18: 
19: /**
20:  * Documents above this word count are never enriched (assumed complete).
21:  * Between LOW and HIGH, we check for paywall markers in the HTML. ...

[
  {
    "content": "Fix 1: Add concurrency guard (`isPolling` flag) to `pollAndEnrich()`",
    "status": "in_progress",
    "priority": "high"
  },
  {
    "content": "Fix 2: Return canonical URL from `enrichDocument()` and mark both URLs as processed",
    "status": "pending",
    "priority": "high"
  },
  {
    "content": "Fix 3: Skip self-created documents (`source === 'readwise-full-content'`)",
    "status": "pending",
    "priority": "high"
  },
  {
    "content": "Fix 4: Check extracted HTML for paywall markers before replacing",
    "status": "pending",
    "priority": "medium"
  },
  {
    "content": "Commit and verify",
    "status": "pending",
    "priority": "medium"
  }
]

Edit applied successfully.

Edit applied successfully.

Edit applied successfully.

[
  {
    "content": "Fix 1: Add concurrency guard (`isPolling` flag) to `pollAndEnrich()`",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Fix 2: Return canonical URL from `enrichDocument()` and mark both URLs as processed",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Fix 3: Skip self-created documents (`source === 'readwise-full-content'`)",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Fix 4: Check extracted HTML for paywall markers before replacing",
    "status": "completed",
    "priority": "medium"
  },
  {
    "content": "Verify final file and commit",
    "status": "in_progress",
    "priority": "medium"
  }
]

<path>/home/byk/Code/readwise-full-content/extension/background.js</path>
<type>file</type>
<content>104: // ============================================================================
105: // Platform detection
106: // ============================================================================
107: 
108: /**
109:  * Whether we're running on Android Firefox.
110:  * On Android, background tabs are not truly hidden — they become visible
111:  * foreground tabs and trigger Firefox's "open in app?" prompts.
112:  * Set once at init via getPlatformInfo().
113:  */
114: let isAndroid = false;
115: 
116: /**
117:  * Guard against concurrent pollAndEnrich() runs.
118:  * Multiple triggers can overlap: alarm fires, "Re-check" button, toggling
119:  * polling on — all call pollAndEnrich() without awaiting the previous run.
120:  * Two concurrent runs processing the same article both call replaceDocument(),
121:  * racing the delete→create cycle, which creates exact duplicates. ...

<path>/home/byk/Code/readwise-full-content/extension/background.js</path>
<type>file</type>
<content>163: // ============================================================================
164: // Polling logic
165: // ============================================================================
166: 
167: /**
168:  * Check recent Readwise documents and enrich any that look thin.
169:  */
170: async function pollAndEnrich() {
171:   // Prevent concurrent poll runs — alarm fires, "Re-check" button,
172:   // and polling toggle can all trigger this simultaneously
173:   if (isPolling) {
174:     console.log("[readwise-full-content] Poll already in progress, skipping");
175:     return;
176:   }
177:   isPolling = true;
178: 
179:   try {
180:     const token = await getToken();
181:     if (!token) return;
182: 
183:     const { pollingEnabled } = await browser.storage.local.get("pollingEnabled");
184:     if (pollingEnabled === false) return;
185: 
186:     ...

<path>/home/byk/Code/readwise-full-content/extension/background.js</path>
<type>file</type>
<content>283:   } finally {
284:     isPolling = false;
285:   }
286: }
287: 
288: /**
289:  * Determine if a document needs enrichment.
290:  * Returns a reason string if yes, or false if no.
291:  *
292:  * Logic:
293:  * - Very low word count (< LOW_WORD_COUNT): always enrich
294:  * - Low-to-medium word count (LOW–HIGH): check HTML for paywall markers
295:  * - High word count (>= HIGH_WORD_COUNT): skip (assumed complete)
296:  */
297: function shouldEnrich(doc) {
298:   if (doc.word_count < LOW_WORD_COUNT) {
299:     return "low-word-count";
300:   }
301: 
302:   // For medium word count, check the HTML content for paywall markers
303:   const html = doc.html_content || "";
304:   if (html && hasPaywallMarkers(html)) {
305:     return "paywall-detected";
306:   }
307: 
308:   // If no HTML content available from Readwise, be conservative
309:   // and enrich anything under the high ...

 extension/background.js | 70 ++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 58 insertions(+), 12 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index aa778f6..7334332 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -113,6 +113,15 @@ const MIN_HTML_SIZE = 30000;
  */
 let isAndroid = false;
 
+/**
+ * Guard against concurrent pollAndEnrich() runs.
+ * Multiple triggers can overlap: alarm fires, "Re-check" button, toggling
+ * polling on — all call pollAndEnrich() without awaiting the previous run.
+ * Two concurrent runs processing the same article both call replaceDocument(),
+ * racing the delete→create cycle, which creates exact duplicates.
+ */
+let isPolling = false;
+
 // ============================================================================
 // State — persisted to storage to survive event page unloads
 // ============================================================================
@@ -159,15 +168,23 @@ async function getEnrichCount() {
  * Check recent Readwise documents and enrich any that look thin. ...

On branch main
Your branch is up to date with 'origin/main'.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
	modified:   extension/background.js

Untracked files:
  (use "git add <file>..." to include in what will be committed)
	.opencode/
	investigate-duplicates.mjs

no changes added to commit (use "git add" and/or "git commit -a")

[main 3cde9cc] fix: prevent duplicate article creation during enrichment
 1 file changed, 58 insertions(+), 12 deletions(-)

[
  {
    "content": "Fix 1: Add concurrency guard (`isPolling` flag) to `pollAndEnrich()`",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Fix 2: Return canonical URL from `enrichDocument()` and mark both URLs as processed",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Fix 3: Skip self-created documents (`source === 'readwise-full-content'`)",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Fix 4: Check extracted HTML for paywall markers before replacing",
    "status": "completed",
    "priority": "medium"
  },
  {
    "content": "Verify final file and commit",
    "status": "completed",
    "priority": "medium"
  }
]

task_id: ses_2d5ce92efffeVSVAfIPELtCdoF (for resuming to continue this task if needed)

<task_result>
Now I have a complete picture. Here's the full analysis:

---

## Release Process Summary

### 1. Versioning

- **Current version**: `1.1.1` (in `extension/manifest.json`, line 4)
- **No `package.json`** — this is a pure browser extension project with no Node.js dependencies. Node.js is only used at build time in CI to run `npx web-ext build`.
- **Version format**: Standard semver (`MAJOR.MINOR.PATCH`) stored solely in `manifest.json`.
- **Gecko addon ID**: `readwise-full-content@byk.im`

### 2. How Releases Are Cut

The release process is a **manual, two-step** workflow:

1. **Bump the version** in `extension/manifest.json` with a commit message `chore: bump version to X.Y.Z` (only that one file changes).
2. **Push a signed git tag** `vX.Y.Z` pointing to the bump commit. The tag push triggers CI.

**12 tags exist** (`v1.0.0` through `v1.1.1`), spanning from 2026-03-13 to 2026-03-23. ...

Edit applied successfully.

User approved switching to build agent. Wait for further instructions.

<path>/home/byk/Code/readwise-full-content/extension/manifest.json</path>
<type>file</type>
<content>1: {
2:   "manifest_version": 2,
3:   "name": "Readwise Full Content",
4:   "version": "1.1.1",
5:   "description": "Automatically enriches Readwise Reader documents with full page content from paywalled sites you're subscribed to",
6: 
7:   "permissions": [
8:     "activeTab",
9:     "storage",
10:     "alarms",
11:     "tabs",
12:     "https://readwise.io/*",
13:     "*://*/*"
14:   ],
15: 
16:   "icons": {
17:     "16": "icons/icon-16.png",
18:     "32": "icons/icon-32.png",
19:     "48": "icons/icon-48.png",
20:     "96": "icons/icon-96.png",
21:     "128": "icons/icon-128.png"
22:   },
23: 
24:   "browser_action": {
25:     "default_icon": {
26:       "16": "icons/icon-16.png",
27:       "32": "icons/icon-32.png",
28:       "48": "icons/icon-48.png"
29:     },
30:     "default_popup": "popup.html",
31:     "default_title": "Save to Readwise Reader"
32:   },
33: 
34:   ...

Edit applied successfully.

[main 11f5c1f] chore: bump version to 1.2.0
 1 file changed, 1 insertion(+), 1 deletion(-)

To https://github.com/BYK/readwise-full-content.git
   c26b405..11f5c1f  main -> main
 * [new tag]         v1.2.0 -> v1.2.0

<path>/home/byk/Code/readwise-full-content/extension/background.js</path>
<type>file</type>
<content>204:     for (const doc of docs) {
205:       // Skip if already processed recently
206:       if (await isRecentlyProcessed(doc.source_url)) {
207:         skipped++;
208:         continue;
209:       }
210: 
211:       // Skip documents already enriched by this extension — re-enriching
212:       // won't help (same paywall will block again) and prevents cross-browser
213:       // duplication when multiple Firefox instances run the extension
214:       if (doc.source === "readwise-full-content") continue;
215: 
216:       // Skip archived documents
217:       if (doc.location === "archive") continue;
218: 
219:       // Skip if clearly complete (high word count, no markers needed)
220:       if (doc.word_count >= HIGH_WORD_COUNT) continue;
221: 
222:       // Skip non-web content (PDFs, tweets, etc.)
223:       const validCategories = ["article", "rss"];

(Showing lines 204-223 of ...

User has answered your questions: "Readwise Reader has these locations: 'new' (inbox), 'later', 'shortlist', 'archive', 'feed'. Currently the code only skips 'archive'. You want to restrict enrichment to ONLY 'later'. Should articles in 'new' (inbox) and 'shortlist' also be skipped, or did you mean 'later and above' (i.e., later + shortlist + new)?"="later + shortlist + new". You can now continue with the user's answers in mind.

Edit applied successfully.

User approved switching to build agent. Wait for further instructions.

Edit applied successfully.

Edit applied successfully.

[main 63bafa0] fix: only enrich saved documents, skip feed and archive
 2 files changed, 5 insertions(+), 3 deletions(-)
[main 63bafa0] fix: only enrich saved documents, skip feed and archive
 Date: Thu Mar 26 12:54:21 2026 +0000
 2 files changed, 5 insertions(+), 3 deletions(-)

Unstaged changes after reset:
M	extension/background.js
M	extension/manifest.json

[main 6bbc903] fix: only enrich saved documents, skip feed and archive
 1 file changed, 4 insertions(+), 2 deletions(-)

[main 68e9414] chore: bump version to 1.2.1
 1 file changed, 1 insertion(+), 1 deletion(-)

To https://github.com/BYK/readwise-full-content.git
   11f5c1f..68e9414  main -> main
 * [new tag]         v1.2.1 -> v1.2.1

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## Recall Results

* \*\*\[knowledge/architecture]\*\* Readwise Full Content extension structure: Firefox MV2 extension (desktop + Android) that enriches Readwise Reader articles with full content from paywalled sites. Key files in \`extension/\`: \`background.js\` (poller + enrichment), \`readwise.js\` (API client, shared), \`popup.js\`/\`popup.html\` (UI). Background uses alarm-based polling every 2 min, checks recent docs for low word count or paywall markers, then extracts HTML via \`fetch()\` first (invisible) with \`extractViaTab()\` fallback (visible tab). Readwise has no content-update endpoint — URL is the dedup key, so replacement requires delete-then-create with a 2s propagation delay. \`should\_clean\_html: true\` offloads content extraction to Readwise's backend.
* \*\*\[distilled]\*\* Date: Mar 23, 2026 \* 🟡 (19:05) User reported 2 Readwise Reader articles not getting populated with full content: https://read.readwise.io/read/01km82qx3ppw77mq8bksd0k2pt and ...

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task_id: ses_2c1a2fab8ffeG8LsEaG9V66OJU (for resuming to continue this task if needed)

<task_result>
Here is a thorough analysis of everything you asked about:

---

## 1. Full Popup UI Layout and Controls

### popup.html Structure

The popup has three major sections stacked vertically:

**Section A: Save Current Page (top)** -- Four mutually exclusive views controlled by `showView()`:

| View ID | Content | When Shown |
|---|---|---|
| `view-save` | Page title, hostname, and a red **"Save Full Page to Readwise"** button (`#save-btn`, class `primary`) | Default for valid web pages |
| `view-saving` | Blue info banner: "Saving to Readwise Reader..." | While save is in progress |
| `view-saved` | Green success banner + **"Open in Reader"** link/button (class `secondary`) | After successful save |
| `view-error` | Red error banner + **"Try Again"** button (`#retry-btn`, class `primary`) | On save failure |
| `view-no-page` | Grey muted banner: "Navigate to a web page to save it." | For ...

User has answered your questions: "What's your typical workflow when you want this? Are you looking at a specific article in Readwise Reader on your phone and want to enrich just that one, or do you want to run a batch re-check that uses tabs for all thin articles?"="Batch re-check with tabs", "For the UI, would you prefer a persistent checkbox (toggle on, re-check runs with tabs until you toggle off) or a one-shot button ("Re-check with tab extraction" that does one pass then stops)?"="Persistent checkbox (Recommended)". You can now continue with the user's answers in mind.

<path>/home/byk/Code/readwise-full-content/extension/popup.html</path>
<type>file</type>
<content>1: <!doctype html>
2: <html>
3:   <head>
4:     <meta charset="utf-8" />
5:     <meta name="viewport" content="width=device-width, initial-scale=1" />
6:     <style>
7:       :root {
8:         --accent: #e3120b;
9:         --dark: #1d1d1b;
10:         --grey: #6b6b6b;
11:         --light: #f5f5f5;
12:         --white: #ffffff;
13:       }
14: 
15:       * {
16:         box-sizing: border-box;
17:         margin: 0;
18:         padding: 0;
19:       }
20: 
21:       body {
22:         font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
23:           sans-serif;
24:         min-width: 320px;
25:         padding: 16px;
26:         color: var(--dark);
27:         background: var(--white);
28:         font-size: 16px;
29:       }
30: 
31:       h1 {
32:         font-size: 14px;
33:         font-weight: 600;
34:         margin-bottom: 12px;
35:         color: var(--accent);
36: ...

<path>/home/byk/Code/readwise-full-content/extension/popup.js</path>
<type>file</type>
<content>1: /**
2:  * Popup script — handles manual "save this page" and settings UI.
3:  */
4: 
5: // ============================================================================
6: // DOM refs
7: // ============================================================================
8: 
9: const views = {
10:   save: document.getElementById("view-save"),
11:   saving: document.getElementById("view-saving"),
12:   saved: document.getElementById("view-saved"),
13:   error: document.getElementById("view-error"),
14:   noPage: document.getElementById("view-no-page"),
15: };
16: 
17: const els = {
18:   pageTitle: document.getElementById("page-title"),
19:   pageUrl: document.getElementById("page-url"),
20:   saveBtn: document.getElementById("save-btn"),
21:   retryBtn: document.getElementById("retry-btn"),
22:   readerLink: document.getElementById("reader-link"),
23:   errorMessage: ...

<path>/home/byk/Code/readwise-full-content/.opencode/plans/1774527426352-shiny-island.md</path>
<type>file</type>
<content>1: # Fix: Duplicate Article Creation in Readwise Full Content Extension
2: 
3: ## Problem
4: Articles appear 2-3 times in Readwise Reader with tiny content (paywall stubs). User runs the extension on **multiple Firefox instances** and uses the **"Re-check all recent articles" button**.
5: 
6: ## Root Causes (confirmed)
7: 
8: ### 1. No concurrency guard on `pollAndEnrich()` → immediate duplicates
9: - Multiple browsers poll independently (separate `browser.storage.local`)
10: - "Re-check" button fires `pollAndEnrich()` without checking if one is already running
11: - Two concurrent runs both see the same article → both call `replaceDocument()` → both create within ms of each other → **exact duplicate pairs** (22ms, 122ms apart in data)
12: 
13: ### 2. ...

Edit applied successfully.

The arguments provided to the tool are invalid: Model tried to call unavailable tool 'plan_exit'. Available tools: invalid, question, bash, read, glob, grep, edit, write, task, webfetch, todowrite, skill, recall, Readwise_readwise_search_highlights, Readwise_readwise_create_highlights, Readwise_readwise_list_highlights, Readwise_readwise_update_highlight, Readwise_readwise_delete_highlight, Readwise_readwise_get_daily_review, Readwise_reader_search_documents, Readwise_reader_create_document, Readwise_reader_list_documents, Readwise_reader_get_document_details, Readwise_reader_list_tags, Readwise_reader_add_tags_to_document, Readwise_reader_remove_tags_from_document, Readwise_reader_move_documents, Readwise_reader_bulk_edit_document_metadata, Readwise_reader_get_document_highlights, Readwise_reader_add_tags_to_highlight, Readwise_reader_remove_tags_from_highlight, Readwise_reader_set_highlight_notes, Readwise_reader_create_highlight, Readwise_reader_export_documents, ...

[
  {
    "content": "Add \"Allow tab extraction\" checkbox to popup.html",
    "status": "in_progress",
    "priority": "high"
  },
  {
    "content": "Wire up toggle in popup.js with Android detection",
    "status": "pending",
    "priority": "high"
  },
  {
    "content": "Read tabExtractionEnabled flag in background.js extractPageHtml()",
    "status": "pending",
    "priority": "high"
  },
  {
    "content": "Bump version to 1.3.0, commit, tag, push",
    "status": "pending",
    "priority": "medium"
  }
]

Edit applied successfully.

[
  {
    "content": "Add \"Allow tab extraction\" checkbox to popup.html",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Wire up toggle in popup.js with Android detection",
    "status": "in_progress",
    "priority": "high"
  },
  {
    "content": "Read tabExtractionEnabled flag in background.js extractPageHtml()",
    "status": "pending",
    "priority": "high"
  },
  {
    "content": "Bump version to 1.3.0, commit, tag, push",
    "status": "pending",
    "priority": "medium"
  }
]

Edit applied successfully.

Edit applied successfully.

Edit applied successfully.

[
  {
    "content": "Add \"Allow tab extraction\" checkbox to popup.html",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Wire up toggle in popup.js with Android detection",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Read tabExtractionEnabled flag in background.js extractPageHtml()",
    "status": "in_progress",
    "priority": "high"
  },
  {
    "content": "Bump version to 1.3.0, commit, tag, push",
    "status": "pending",
    "priority": "medium"
  }
]

<path>/home/byk/Code/readwise-full-content/extension/background.js</path>
<type>file</type>
<content>410:       `[readwise-full-content] Fetched via invisible request: ${url}`,
411:     );
412:     return fetchResult;
413:   }
414: 
415:   // On Android, tabs are not truly backgrounded — they become visible,
416:   // cause jarring tab flashing, and trigger Firefox "open in app?" prompts.
417:   // Skip the tab fallback; the user's desktop browser will enrich these.
418:   if (isAndroid) {
419:     console.log(
420:       `[readwise-full-content] Fetch insufficient, skipping tab fallback (Android): ${url}`,
421:     );
422:     return null;
423:   }
424: 
425:   // Fallback: open a real browser tab (handles JS challenges)
426:   console.log(
427:     `[readwise-full-content] Fetch insufficient, falling back to tab: ${url}`,
428:   );
429:   return extractViaTab(url);
430: }
431: 
432: /**
433:  * Try to fetch page HTML using fetch() with credentials. ...

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<path>/home/byk/Code/readwise-full-content/extension/manifest.json</path>
<type>file</type>
<content>1: {
2:   "manifest_version": 2,
3:   "name": "Readwise Full Content",
4:   "version": "1.2.1",
5:   "description": "Automatically enriches Readwise Reader documents with full page content from paywalled sites you're subscribed to",

(Showing lines 1-5 of 51. Use offset=6 to continue.)
</content>

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[
  {
    "content": "Add \"Allow tab extraction\" checkbox to popup.html",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Wire up toggle in popup.js with Android detection",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Read tabExtractionEnabled flag in background.js extractPageHtml()",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Bump version to 1.3.0, commit, tag, push",
    "status": "in_progress",
    "priority": "medium"
  }
]

[main c98958d] feat: add opt-in tab extraction toggle for Android
 3 files changed, 45 insertions(+), 3 deletions(-)

[main 94624c9] chore: bump version to 1.3.0
 1 file changed, 1 insertion(+), 1 deletion(-)

To https://github.com/BYK/readwise-full-content.git
   68e9414..94624c9  main -> main
 * [new tag]         v1.3.0 -> v1.3.0

[
  {
    "content": "Add \"Allow tab extraction\" checkbox to popup.html",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Wire up toggle in popup.js with Android detection",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Read tabExtractionEnabled flag in background.js extractPageHtml()",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Bump version to 1.3.0, commit, tag, push",
    "status": "completed",
    "priority": "medium"
  }
]