Flexion - Custom Implementations Tracker

[lgarceau768]

DO NOT MERGE

This is a permanent tracking PR that shows all Flexion-specific customizations on top of upstream anomalyco/opencode.

It mirrors the pattern used in flexion/open-webui#14.

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Branching Strategy

Branch	Purpose
dev	Tracks upstream anomalyco/opencode:dev exactly — synced via force-push when upstream releases
flex	All Flexion customizations, rebased onto latest dev after each upstream sync

Keeping in sync with upstream

# 1. Fetch upstream
git fetch upstream  # upstream = https://github.com/anomalyco/opencode.git

# 2. Update dev to match upstream
git checkout dev
git reset --hard upstream/dev
git push origin dev --force

# 3. Rebase flex onto the new dev
git checkout flex
git rebase dev
# Resolve any conflicts, then:
git push origin flex --force

# 4. This PR will automatically update to reflect the new diff

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Flexion Customizations (rebased onto v1.4.0)

1. fix: hide skill prompt text from chat UI

File: packages/opencode/src/session/prompt.ts

Mark the skill template TextPart as synthetic: true so the full prompt is sent to the model but hidden from the user. Adds a short ignored: true summary part (Running skill: <command>) so the user still sees confirmation the skill was loaded.

Originally merged as flexion/opencode#1.

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2. fix: respect tool_call: false capability flag at runtime

Files: packages/opencode/src/session/llm.ts, packages/opencode/test/session/llm.test.ts

Gates tool resolution, LiteLLM noop injection, activeTools, tools, and toolChoice behind input.model.capabilities.toolcall. Without this fix, tool_call: false in opencode.json is parsed and stored but never checked — causing Bedrock models that don't support streaming + tool use to fail.

Includes a regression test verifying body.tools is not sent when toolcall: false.

Originally from lgarceau768/opencode#1.

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3. docs: add local build and AWS Bedrock setup instructions

File: LOCAL_AWS_SETUP.md

Covers cloning, building with bun, AWS SSO profile config, opencode.json Bedrock provider setup, and the opencode-work shell alias.

Originally from lgarceau768/opencode#1.

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4. fix: re-sign macOS binaries after Bun compile to fix Darwin 25+ SIGKILL

File: LOCAL_AWS_SETUP.md

Bun's embedded code signature is rejected by Darwin 25+ (macOS 16) at runtime, killing the binary with SIGKILL (exit 137) before it starts
Adds a post-compile step in script/build.ts to strip Bun's signature and apply a fresh ad-hoc one via codesign for all darwin targets
Documents the fix in LOCAL_AWS_SETUP.md

Originally from fix/bun-build-issue-on-macos-darwin25.

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5. fix: Bedrock model config update

Files: packages/opencode/src/provider/provider.ts, packages/opencode/src/provider/transform.ts, packages/opencode/test/provider/transform.test.ts
Fixes compatibility with the following AWS Bedrock models:

• Writer Palmyra X4 / Palmyra X5
• DeepSeek R1 (A)
• Mistral Pixtral Large
• Meta Llama 4 Maverick 17B / Scout 17B
• Amazon Nova 2 Lite
  Changes:
• Added "palmyra" and "pixtral" to the Bedrock us region cross-region inference prefix list in provider.ts, so these models receive the required us. prefix at runtime
• Added id.includes("palmyra") to the variants early-return list in transform.ts — Palmyra does not support reasoning effort variants
• Added Palmyra-specific type: "reasoning" part stripping in normalizeMessages — Bedrock rejects messages containing reasoning parts for models that don't support reasoning; scoped to model.id.toLowerCase().includes("palmyra") to avoid affecting OpenAI/Anthropic models
• Added a regression test: Palmyra models strip reasoning content (Bedrock rejects reasoning parts)

Originally from (flexion/opencode#4)

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6. fix: bump @opentui/core and @opentui/solid catalog to 0.1.101

Files: bun.lock, packages.json

Resolves duplicate module instances (0.1.99 vs 0.1.101) that caused opentui-spinner to register the spinner component in a different componentCatalogue than the one the reconciler uses, resulting in "[Reconciler] Unknown component type: spinner" at runtime.

Originally from flexion/opencode#9

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7. feature: update opencode-work shell function

File: LOCAL_AWS_SETUP.md

Updates opencode-work shell function with credential check and session resume.

If your AWS session already exists it won't re-authenticate
Add an existing opencode session id to resume a session: opencode-work ses-234556677abcde

Originally from flexion/opencode#10

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Local Development Setup

See LOCAL_AWS_SETUP.md for full setup instructions including AWS Bedrock configuration.

[github-actions]

Hey! Your PR title Flexion - Custom Implementations Tracker doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

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