feat(composer): context window selector follows native defaults, adds custom window by Tryanks · Pull Request #318 · Tryanks/tcode

Tryanks · 2026-09-02T20:26:49Z

Summary

Claude contextWindow option defaults to the model's native window (200k: Sonnet 4.6 / Opus 4.6; 1M: Fable 5 / 5.1, Opus 5, Sonnet 5, Opus 4.7 / 4.8 — the last two gain the option).
Selecting the default emits no launch flags. A smaller window is passed as --settings {"autoCompactWindow":N}; [1m] is only appended to expand a native-200k model.
Picker gains a Custom row with an inline input (500k, 500000, 500; 100k–1M, inline validation error).
Changing the window while the provider is live restarts it before the next turn and records a ContextWindowChanged divider ("Context window set to 200k") directly under the user message. Not emitted for the first message of a conversation or an idle session.
Composer context meter is clamped to the selected window.

Verification

cargo fmt --all --check, cargo clippy --workspace --all-targets -- -D warnings, cargo test --workspace pass locally.
Manual run against a throwaway TCODE_DATA_DIR: Opus 5 shows 1M by default; entering 500k launches claude --model claude-opus-5 --settings {"autoCompactWindow":500000} (no [1m]); switching to 200k mid-session relaunches with autoCompactWindow: 200000 and renders the divider under the second user message.

… custom window Claude models now default the Context Window option to their native window (200k for Sonnet 4.6 / Opus 4.6, 1M for Fable 5/5.1, Opus 5, Sonnet 5, Opus 4.7/4.8; the latter two gain the option). Selecting the default emits no launch flags; a smaller window is passed as `--settings {"autoCompactWindow":N}` and `[1m]` is only appended to expand a native-200k model. The picker gains a Custom row with an inline input (500k / 500000 / 500, 100k–1M). Changing the window while the provider is live restarts it before the next turn and records a `ContextWindowChanged` timeline divider under the user message. The composer's context meter is clamped to the selected window.

Tryanks · 2026-09-02T20:26:49Z

Summary

Claude contextWindow option defaults to the model's native window (200k: Sonnet 4.6 / Opus 4.6; 1M: Fable 5 / 5.1, Opus 5, Sonnet 5, Opus 4.7 / 4.8 — the last two gain the option).
Selecting the default emits no launch flags. A smaller window is passed as --settings {"autoCompactWindow":N}; [1m] is only appended to expand a native-200k model.
Picker gains a Custom row with an inline input (500k, 500000, 500; 100k–1M, inline validation error).
Changing the window while the provider is live restarts it before the next turn and records a ContextWindowChanged divider ("Context window set to 200k") directly under the user message. Not emitted for the first message of a conversation or an idle session.
Composer context meter is clamped to the selected window.

Verification

cargo fmt --all --check, cargo clippy --workspace --all-targets -- -D warnings, cargo test --workspace pass locally.
Manual run against a throwaway TCODE_DATA_DIR: Opus 5 shows 1M by default; entering 500k launches claude --model claude-opus-5 --settings {"autoCompactWindow":500000} (no [1m]); switching to 200k mid-session relaunches with autoCompactWindow: 200000 and renders the divider under the second user message.

… custom window Claude models now default the Context Window option to their native window (200k for Sonnet 4.6 / Opus 4.6, 1M for Fable 5/5.1, Opus 5, Sonnet 5, Opus 4.7/4.8; the latter two gain the option). Selecting the default emits no launch flags; a smaller window is passed as `--settings {"autoCompactWindow":N}` and `[1m]` is only appended to expand a native-200k model. The picker gains a Custom row with an inline input (500k / 500000 / 500, 100k–1M). Changing the window while the provider is live restarts it before the next turn and records a `ContextWindowChanged` timeline divider under the user message. The composer's context meter is clamped to the selected window.

Tryanks · 2026-09-02T20:26:49Z

Summary

Claude contextWindow option defaults to the model's native window (200k: Sonnet 4.6 / Opus 4.6; 1M: Fable 5 / 5.1, Opus 5, Sonnet 5, Opus 4.7 / 4.8 — the last two gain the option).
Selecting the default emits no launch flags. A smaller window is passed as --settings {"autoCompactWindow":N}; [1m] is only appended to expand a native-200k model.
Picker gains a Custom row with an inline input (500k, 500000, 500; 100k–1M, inline validation error).
Changing the window while the provider is live restarts it before the next turn and records a ContextWindowChanged divider ("Context window set to 200k") directly under the user message. Not emitted for the first message of a conversation or an idle session.
Composer context meter is clamped to the selected window.

Verification

cargo fmt --all --check, cargo clippy --workspace --all-targets -- -D warnings, cargo test --workspace pass locally.
Manual run against a throwaway TCODE_DATA_DIR: Opus 5 shows 1M by default; entering 500k launches claude --model claude-opus-5 --settings {"autoCompactWindow":500000} (no [1m]); switching to 200k mid-session relaunches with autoCompactWindow: 200000 and renders the divider under the second user message.

… custom window Claude models now default the Context Window option to their native window (200k for Sonnet 4.6 / Opus 4.6, 1M for Fable 5/5.1, Opus 5, Sonnet 5, Opus 4.7/4.8; the latter two gain the option). Selecting the default emits no launch flags; a smaller window is passed as `--settings {"autoCompactWindow":N}` and `[1m]` is only appended to expand a native-200k model. The picker gains a Custom row with an inline input (500k / 500000 / 500, 100k–1M). Changing the window while the provider is live restarts it before the next turn and records a `ContextWindowChanged` timeline divider under the user message. The composer's context meter is clamped to the selected window.

Tryanks · 2026-09-02T20:26:49Z

Summary

Claude contextWindow option defaults to the model's native window (200k: Sonnet 4.6 / Opus 4.6; 1M: Fable 5 / 5.1, Opus 5, Sonnet 5, Opus 4.7 / 4.8 — the last two gain the option).
Selecting the default emits no launch flags. A smaller window is passed as --settings {"autoCompactWindow":N}; [1m] is only appended to expand a native-200k model.
Picker gains a Custom row with an inline input (500k, 500000, 500; 100k–1M, inline validation error).
Changing the window while the provider is live restarts it before the next turn and records a ContextWindowChanged divider ("Context window set to 200k") directly under the user message. Not emitted for the first message of a conversation or an idle session.
Composer context meter is clamped to the selected window.

Verification

cargo fmt --all --check, cargo clippy --workspace --all-targets -- -D warnings, cargo test --workspace pass locally.
Manual run against a throwaway TCODE_DATA_DIR: Opus 5 shows 1M by default; entering 500k launches claude --model claude-opus-5 --settings {"autoCompactWindow":500000} (no [1m]); switching to 200k mid-session relaunches with autoCompactWindow: 200000 and renders the divider under the second user message.

… custom window Claude models now default the Context Window option to their native window (200k for Sonnet 4.6 / Opus 4.6, 1M for Fable 5/5.1, Opus 5, Sonnet 5, Opus 4.7/4.8; the latter two gain the option). Selecting the default emits no launch flags; a smaller window is passed as `--settings {"autoCompactWindow":N}` and `[1m]` is only appended to expand a native-200k model. The picker gains a Custom row with an inline input (500k / 500000 / 500, 100k–1M). Changing the window while the provider is live restarts it before the next turn and records a `ContextWindowChanged` timeline divider under the user message. The composer's context meter is clamped to the selected window.

Tryanks · 2026-09-02T20:26:49Z

Summary

Claude contextWindow option defaults to the model's native window (200k: Sonnet 4.6 / Opus 4.6; 1M: Fable 5 / 5.1, Opus 5, Sonnet 5, Opus 4.7 / 4.8 — the last two gain the option).
Selecting the default emits no launch flags. A smaller window is passed as --settings {"autoCompactWindow":N}; [1m] is only appended to expand a native-200k model.
Picker gains a Custom row with an inline input (500k, 500000, 500; 100k–1M, inline validation error).
Changing the window while the provider is live restarts it before the next turn and records a ContextWindowChanged divider ("Context window set to 200k") directly under the user message. Not emitted for the first message of a conversation or an idle session.
Composer context meter is clamped to the selected window.

Verification

cargo fmt --all --check, cargo clippy --workspace --all-targets -- -D warnings, cargo test --workspace pass locally.
Manual run against a throwaway TCODE_DATA_DIR: Opus 5 shows 1M by default; entering 500k launches claude --model claude-opus-5 --settings {"autoCompactWindow":500000} (no [1m]); switching to 200k mid-session relaunches with autoCompactWindow: 200000 and renders the divider under the second user message.

… custom window Claude models now default the Context Window option to their native window (200k for Sonnet 4.6 / Opus 4.6, 1M for Fable 5/5.1, Opus 5, Sonnet 5, Opus 4.7/4.8; the latter two gain the option). Selecting the default emits no launch flags; a smaller window is passed as `--settings {"autoCompactWindow":N}` and `[1m]` is only appended to expand a native-200k model. The picker gains a Custom row with an inline input (500k / 500000 / 500, 100k–1M). Changing the window while the provider is live restarts it before the next turn and records a `ContextWindowChanged` timeline divider under the user message. The composer's context meter is clamped to the selected window.

Tryanks · 2026-09-02T20:26:49Z

Summary

Claude contextWindow option defaults to the model's native window (200k: Sonnet 4.6 / Opus 4.6; 1M: Fable 5 / 5.1, Opus 5, Sonnet 5, Opus 4.7 / 4.8 — the last two gain the option).
Selecting the default emits no launch flags. A smaller window is passed as --settings {"autoCompactWindow":N}; [1m] is only appended to expand a native-200k model.
Picker gains a Custom row with an inline input (500k, 500000, 500; 100k–1M, inline validation error).
Changing the window while the provider is live restarts it before the next turn and records a ContextWindowChanged divider ("Context window set to 200k") directly under the user message. Not emitted for the first message of a conversation or an idle session.
Composer context meter is clamped to the selected window.

Verification

cargo fmt --all --check, cargo clippy --workspace --all-targets -- -D warnings, cargo test --workspace pass locally.
Manual run against a throwaway TCODE_DATA_DIR: Opus 5 shows 1M by default; entering 500k launches claude --model claude-opus-5 --settings {"autoCompactWindow":500000} (no [1m]); switching to 200k mid-session relaunches with autoCompactWindow: 200000 and renders the divider under the second user message.

… custom window Claude models now default the Context Window option to their native window (200k for Sonnet 4.6 / Opus 4.6, 1M for Fable 5/5.1, Opus 5, Sonnet 5, Opus 4.7/4.8; the latter two gain the option). Selecting the default emits no launch flags; a smaller window is passed as `--settings {"autoCompactWindow":N}` and `[1m]` is only appended to expand a native-200k model. The picker gains a Custom row with an inline input (500k / 500000 / 500, 100k–1M). Changing the window while the provider is live restarts it before the next turn and records a `ContextWindowChanged` timeline divider under the user message. The composer's context meter is clamped to the selected window.

Tryanks · 2026-09-02T20:26:49Z

Summary

Claude contextWindow option defaults to the model's native window (200k: Sonnet 4.6 / Opus 4.6; 1M: Fable 5 / 5.1, Opus 5, Sonnet 5, Opus 4.7 / 4.8 — the last two gain the option).
Selecting the default emits no launch flags. A smaller window is passed as --settings {"autoCompactWindow":N}; [1m] is only appended to expand a native-200k model.
Picker gains a Custom row with an inline input (500k, 500000, 500; 100k–1M, inline validation error).
Changing the window while the provider is live restarts it before the next turn and records a ContextWindowChanged divider ("Context window set to 200k") directly under the user message. Not emitted for the first message of a conversation or an idle session.
Composer context meter is clamped to the selected window.

Verification

cargo fmt --all --check, cargo clippy --workspace --all-targets -- -D warnings, cargo test --workspace pass locally.
Manual run against a throwaway TCODE_DATA_DIR: Opus 5 shows 1M by default; entering 500k launches claude --model claude-opus-5 --settings {"autoCompactWindow":500000} (no [1m]); switching to 200k mid-session relaunches with autoCompactWindow: 200000 and renders the divider under the second user message.

… custom window Claude models now default the Context Window option to their native window (200k for Sonnet 4.6 / Opus 4.6, 1M for Fable 5/5.1, Opus 5, Sonnet 5, Opus 4.7/4.8; the latter two gain the option). Selecting the default emits no launch flags; a smaller window is passed as `--settings {"autoCompactWindow":N}` and `[1m]` is only appended to expand a native-200k model. The picker gains a Custom row with an inline input (500k / 500000 / 500, 100k–1M). Changing the window while the provider is live restarts it before the next turn and records a `ContextWindowChanged` timeline divider under the user message. The composer's context meter is clamped to the selected window.

Tryanks · 2026-09-02T20:26:49Z

Summary

Claude contextWindow option defaults to the model's native window (200k: Sonnet 4.6 / Opus 4.6; 1M: Fable 5 / 5.1, Opus 5, Sonnet 5, Opus 4.7 / 4.8 — the last two gain the option).
Selecting the default emits no launch flags. A smaller window is passed as --settings {"autoCompactWindow":N}; [1m] is only appended to expand a native-200k model.
Picker gains a Custom row with an inline input (500k, 500000, 500; 100k–1M, inline validation error).
Changing the window while the provider is live restarts it before the next turn and records a ContextWindowChanged divider ("Context window set to 200k") directly under the user message. Not emitted for the first message of a conversation or an idle session.
Composer context meter is clamped to the selected window.

Verification

cargo fmt --all --check, cargo clippy --workspace --all-targets -- -D warnings, cargo test --workspace pass locally.
Manual run against a throwaway TCODE_DATA_DIR: Opus 5 shows 1M by default; entering 500k launches claude --model claude-opus-5 --settings {"autoCompactWindow":500000} (no [1m]); switching to 200k mid-session relaunches with autoCompactWindow: 200000 and renders the divider under the second user message.

… custom window Claude models now default the Context Window option to their native window (200k for Sonnet 4.6 / Opus 4.6, 1M for Fable 5/5.1, Opus 5, Sonnet 5, Opus 4.7/4.8; the latter two gain the option). Selecting the default emits no launch flags; a smaller window is passed as `--settings {"autoCompactWindow":N}` and `[1m]` is only appended to expand a native-200k model. The picker gains a Custom row with an inline input (500k / 500000 / 500, 100k–1M). Changing the window while the provider is live restarts it before the next turn and records a `ContextWindowChanged` timeline divider under the user message. The composer's context meter is clamped to the selected window.

Tryanks merged commit dfe8c46 into mainSep 2, 2026
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