Sync Claude Code upstream v2.1.70 → v2.1.77 (da80366 → 079dc85)

[Copilot]

Tracks upstream CLI surface changes across releases v2.1.71–2.1.77. The only SDK-relevant additions are a new session naming flag and two new model aliases.

Submodule

• Bumped submodules/anthropic-claude-code to 079dc856 (v2.1.77)

New --name / -n flag (v2.1.76)

Sets a display name for the session at startup.

• ClaudeExecArgs.SessionName — new optional string property
• ClaudeExec — new NameFlag constant + mapping appends --name <value> when set

var args = new ClaudeExecArgs
{
    Input = "...",
    SessionName = "my-refactor-session",
};

New model aliases (v2.1.77)

Opus 4.6 and Sonnet 4.6 surfaced with expanded token limits (64k default / 128k upper bound for Max/Team/Enterprise).

• ClaudeModels.ClaudeOpus46Alias → "claude-opus-4-6"
• ClaudeModels.ClaudeSonnet46Alias → "claude-sonnet-4-6"
• Both registered in ClaudeModels.Known

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Sync Claude Code upstream changes (da80366 -> 079dc85)</issue_title>
<issue_description>

Detected upstream updates in anthropics/claude-code affecting Claude Code CLI surface tracking.

Runtime source of truth for this SDK is the real print-mode CLI contract:

• claude -p --output-format json

• claude -p --output-format stream-json --verbose

• Submodule path: submodules/anthropic-claude-code

• Published CLI package used in CI: @anthropic-ai/claude-code

• Watched branch: main

• Current pinned commit: da80366c484698e6370ad9e8abf121f33f8f79e0

• Latest upstream commit: 079dc856c6c990de5be28e288939293905c154c1

• Compare: anthropics/claude-code@da80366...079dc85

• Latest commit: anthropics/claude-code@079dc85

Changed files (CLI-relevant)

• CHANGELOG.md

Potential CLI flag changes from diff

• --agents
• --compact
• --continue
• --effort
• --git
• --model
• --name
• --plugin-dir
• --print
• --resume
• --verbose
• --worktree

Potential model changes from diff

• claude-code
• claude-opus-4-5

Potential feature changes from diff

• (no feature tokens detected from diff)

Commits

• 079dc85 chore: Update CHANGELOG.md (2026-03-17)
• 420a188 chore: Update CHANGELOG.md (2026-03-14)
• 48b1c6c chore: Update CHANGELOG.md (2026-03-13)
• db8834b feat(code-review): pass confirmed=true when posting inline comments (2026-03-11)
• 6f049b6 chore: Update CHANGELOG.md (2026-03-12)
• 45b5430 chore: Update CHANGELOG.md (2026-03-11)
• f6dbf44 chore: Update CHANGELOG.md (2026-03-10)
• 540b61b chore: Update CHANGELOG.md (2026-03-10)
• 00553de chore: Update CHANGELOG.md (2026-03-10)
• 53a5f3e chore: Update CHANGELOG.md (2026-03-07)

Action required

• Pull the new anthropics/claude-code submodule commit into this repository
• Validate latest claude --help output and representative non-interactive runtime behavior
• Re-check claude -p --output-format json and claude -p --output-format stream-json --verbose payload shape
• Sync C# SDK constants/options/models with upstream CLI changes
• Add or update tests for new flags/models/features
• Update docs (README + docs/Features + docs/Architecture if needed)

Opened automatically by scheduled workflow 'Claude Code Upstream Watch'.</issue_description>

<agent_instructions>Check and update code if needed but create just one. Branch and on pr </agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Sync Claude Code upstream changes (da80366 -> 079dc85) #7

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