## Thinking Path
> - Paperclip orchestrates AI agents for zero-human companies
> - The issue detail page displays comment threads with rich timeline
rendering
> - Long threads (100+ items) cause severe typing lag in the comment
composer because every keystroke re-renders the entire timeline
> - CDP tracing confirmed 110ms avg key→paint latency and 60 long tasks
blocking the main thread for 3.7s total
> - This pull request memoizes the timeline, stabilizes callback props,
debounces editor observers, and reduces idle polling frequency
> - The benefit is responsive typing (21ms avg, 5.3× faster) even on
threads with 100+ timeline items
## What Changed
- **CommentThread.tsx**: Memoize `TimelineList` with `useMemo` so typing
state changes don't re-render 143 timeline items; extract
`handleFeedbackVote` to `useCallback`; added missing deps
(`pendingApprovalAction`, `onApproveApproval`, `onRejectApproval`) to
useMemo array
- **IssueDetail.tsx**: Extract inline callbacks (`handleCommentAdd`,
`handleCommentVote`, `handleCommentImageUpload`,
`handleCommentAttachImage`, `handleInterruptQueued`) to `useCallback`
with `.mutateAsync` deps (not full mutation objects) for stable
references; add conditional polling intervals (3s active / 30s idle) for
`liveRuns`, `activeRun`, `linkedRuns`, and timeline queries
- **MarkdownEditor.tsx**: Debounce `MutationObserver` and
`selectionchange` handlers via `requestAnimationFrame` coalescing
- **LiveRunWidget.tsx**: Accept optional `liveRunsData` and
`activeRunData` props to reuse parent-fetched data instead of duplicate
polling
## Verification
- Navigated to [IP address]:3105/PAPA/issues/PAPA-32 (thread with 100+
items)
- Typed in comment composer — lag eliminated, characters appear
instantly
- CDP trace test script (`test-typing-lag.mjs`) confirmed: avg 21ms
key→paint (was 110ms), 5 long tasks (was 60), 0.5s blocking (was 3.7s)
- Ran `pnpm test:run` locally — all tests pass
## Risks
- Low risk. All changes are additive memoization and callback
stabilization — no behavioral changes. Polling intervals are only
reduced for idle state; active runs still poll at 3–5s.
## Model Used
- Claude Opus 4.6 (`claude-opus-4-6`) via Claude Code CLI, with tool use
and extended context
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
On resumed sessions, skipping --append-system-prompt-file (the original
fix) left two secondary issues:
- commandNotes still claimed the flag was injected, producing misleading
onMeta logs on every resumed heartbeat
- The instructions file was still read from disk and a combined temp file
written on every resume, even though effectiveInstructionsFilePath was
never consumed
Hoist canResumeSession before the I/O block and gate both the disk
operations and commandNotes construction on !canResumeSession / !sessionId.
Adds three regression tests: commandNotes is populated on fresh sessions,
empty on resume; and no agent-instructions.md is written on resume.
On resumed sessions the agent instructions are already present in the
session cache. Unconditionally passing --append-system-prompt-file
re-injects 5-10K redundant tokens per heartbeat and may be rejected by
the Claude CLI when combined with --resume.
Guard the flag behind `!resumeSessionId` so it is only appended on
fresh session starts.
Fixes: #2848
Previously, --model was completely skipped for Bedrock users, so the
model dropdown selection was silently ignored and the CLI always used
its default model. Selecting Haiku would still run Opus.
- Add listClaudeModels() that returns Bedrock-native model IDs
(us.anthropic.*) when Bedrock env is detected
- Register listModels on claude_local adapter so the UI dropdown
shows Bedrock models instead of Anthropic API names
- Allow --model to pass through when the ID is a Bedrock-native
identifier (us.anthropic.* or ARN)
- Add isBedrockModelId() helper shared by execute.ts and test.ts
Follows up on #2793 which added basic Bedrock auth detection.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Set server.keepAliveTimeout to 185s to safely outlive default Traefik/AWS ALB idle timeouts (typically 60-180s)
- Resolves random "Failed to fetch" edge cases caused by Node.js's notoriously short 5s default timeout
Closes#3008
## Thinking Path
Paperclip orchestrates AI agent runs and reports their success or
failure. The Pi adapter spawns a local Pi process and interprets its
JSONL output to determine the run outcome. When Pi hits a quota limit
(429 RESOURCE_EXHAUSTED), it retries internally and emits an
`auto_retry_end` event with `success: false` — but still exits with code
0. The current adapter trusts the exit code, so Paperclip marks the run
as succeeded even though it produced no useful work. This PR teaches the
parser to detect quota exhaustion and synthesize a failure.
Closes#2234
## Changes
- Parse `auto_retry_end` events with `success: false` into
`result.errors`
- Parse standalone `error` events into `result.errors`
- Synthesize exit code 1 when Pi exits 0 but parsed errors exist
- Use the parsed error as `errorMessage` so the failure reason is
visible in the UI
## Verification
```bash
pnpm vitest run pi-local-execute
pnpm vitest run --reporter=verbose 2>&1 | grep pi-local
```
- `parse.test.ts`: covers failed retry, successful retry (no error),
standalone error events, and empty error messages
- `pi-local-execute.test.ts`: end-to-end test with a fake Pi binary that
emits `auto_retry_end` + exits 0, asserts the run is marked failed
## Risks
- **Low**: Only affects runs where Pi exits 0 with a parsed error — no
change to normal successful or already-failing runs
- If Pi emits `auto_retry_end { success: false }` but the run actually
produced valid output, this would incorrectly mark it as failed. This
seems unlikely given the semantics of the event.
## Model Used
- Claude Opus 4.6 (Anthropic) — assisted with test additions and PR
template
## Checklist
- [x] Thinking path documented
- [x] Model specified
- [x] Tests pass locally
- [x] Test coverage for new parse branches (success path, error events,
empty messages)
- [x] No UI changes
- [x] Risk analysis included
---------
Co-authored-by: Dawid Piaskowski <dawid@MacBook-Pro.local>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Closes#2412
Related: #2681, #498, #128
## Thinking Path
> - Paperclip orchestrates AI agents for zero-human companies
> - The Claude Code adapter spawns the `claude` CLI to run agent tasks
> - The adapter detects auth mode by checking for `ANTHROPIC_API_KEY` —
recognizing only "api" and "subscription" modes
> - But users running Claude Code via **AWS Bedrock**
(`CLAUDE_CODE_USE_BEDROCK=1`) fall through to the "subscription" path
> - This causes a misleading "ANTHROPIC_API_KEY is not set;
subscription-based auth can be used" message in the environment check
> - Additionally, the hello probe passes `--model claude-opus-4-6` which
is **not a valid Bedrock model identifier**, causing `400 The provided
model identifier is invalid` and a probe failure
> - This pull request adds Bedrock auth detection, skips the
Anthropic-style `--model` flag for Bedrock, and returns the correct
billing type
> - The benefit is that Bedrock users get a working environment check
and correct cost tracking out of the box
---
## Pain Point
Many enterprise teams use **Claude Code through AWS Bedrock** rather
than Anthropic's direct API — for compliance, billing consolidation, or
VPC requirements. Currently, these users hit a **hard wall during
onboarding**:
| Problem | Impact |
|---|---|
| ❌ Adapter environment check **always fails** | Users cannot create
their first agent — blocked at step 1 |
| ❌ `--model claude-opus-4-6` is **invalid on Bedrock** (requires
`us.anthropic.*` format) | Hello probe exits with code 1: `400 The
provided model identifier is invalid` |
| ❌ Auth shown as _"subscription-based"_ | Misleading — Bedrock is
neither subscription nor API-key auth |
| ❌ Quota polling hits Anthropic OAuth endpoint | Fails silently for
Bedrock users who have no Anthropic subscription |
> **Bottom line**: Paperclip is completely unusable for Bedrock users
out of the box.
## Why Bedrock Matters
AWS Bedrock is a major deployment path for Claude in enterprise
environments:
- **Enterprise compliance** — data stays within the customer's AWS
account and VPC
- **Unified billing** — Claude usage appears on the existing AWS
invoice, no separate Anthropic billing
- **IAM integration** — access controlled through AWS IAM roles and
policies
- **Regional deployment** — models run in the customer's preferred AWS
region
Supporting Bedrock unlocks Paperclip for organizations that **cannot**
use Anthropic's direct API due to procurement, security, or regulatory
constraints.
---
## What Changed
- **`execute.ts`**: Added `isBedrockAuth()` helper that checks
`CLAUDE_CODE_USE_BEDROCK` and `ANTHROPIC_BEDROCK_BASE_URL` env vars.
`resolveClaudeBillingType()` now returns `"metered_api"` for Bedrock.
Biller set to `"aws_bedrock"`. Skips `--model` flag when Bedrock is
active (Anthropic-style model IDs are invalid on Bedrock; the CLI uses
its own configured model).
- **`test.ts`**: Environment check now detects Bedrock env vars (from
adapter config or server env) and shows `"AWS Bedrock auth detected.
Claude will use Bedrock for inference."` instead of the misleading
subscription message. Also skips `--model` in the hello probe for
Bedrock.
- **`quota.ts`**: Early return with `{ ok: true, windows: [] }` when
Bedrock is active — Bedrock usage is billed through AWS, not Anthropic's
subscription quota system.
- **`ui/src/lib/utils.ts`**: Added `"aws_bedrock"` → `"AWS Bedrock"` to
`providerDisplayName()` and `quotaSourceDisplayName()`.
## Verification
1. `pnpm -r typecheck` — all packages pass
2. Unit tests added and passing (6/6)
3. Environment check with Bedrock env vars:
| | Before | After |
|---|---|---|
| **Status** | 🔴 Failed | ✅ Passed |
| **Auth message** | `ANTHROPIC_API_KEY is not set; subscription-based
auth can be used if Claude is logged in.` | `AWS Bedrock auth detected.
Claude will use Bedrock for inference.` |
| **Hello probe** | `ERROR · Claude hello probe failed.` (exit code 1 —
`--model claude-opus-4-6` is invalid on Bedrock) | `INFO · Claude hello
probe succeeded.` |
| **Screenshot** | <img height="500" alt="Screenshot 2026-04-05 at 8 25
27 AM"
src="https://github.com/user-attachments/assets/476431f6-6139-425a-8abc-97875d653657"
/> | <img height="500" alt="Screenshot 2026-04-05 at 8 31 58 AM"
src="https://github.com/user-attachments/assets/d388ce87-c5e6-4574-b8d2-fd8b86135299"
/> |
4. Existing API key / subscription paths are completely untouched unless
Bedrock env vars are present
## Risks
- **Low risk.** All changes are additive — existing "api" and
"subscription" code paths are only entered when Bedrock env vars are
absent.
- When Bedrock is active, the `--model` flag is skipped, so the
Paperclip model dropdown selection is ignored in favor of the Claude
CLI's own model config. This is intentional since Bedrock requires
different model identifiers.
## Model Used
- Claude Opus 4.6 (`claude-opus-4-6`, 1M context window) via Claude Code
CLI
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Compare Buffer byte lengths instead of string character lengths before
timingSafeEqual to avoid potential mismatch with multi-byte input.
Add comment explaining the hubSignatureHeader ?? signatureHeader fallback.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Adds two new webhook trigger signing modes for external provider
compatibility:
- github_hmac: accepts X-Hub-Signature-256 header with
HMAC-SHA256(secret, rawBody), no timestamp prefix. Compatible with
GitHub, Sentry, and services following the same standard.
- none: no authentication; the 24-char hex publicId in the URL acts
as the shared secret. For services that cannot add auth headers.
The replay window UI field is hidden when these modes are selected
since neither uses timestamp-based replay protection.
Closes#1892
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
dotta