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COD-80 centralize terminal history/scrollback/buffer limits into config

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Introduce src/config/terminal-history.ts: one place for terminal scrollback,
tmux history-limit, and PTY buffer byte caps, each overridable via env var or
the settings object and bounds-clamped via resolveTerminalHistoryConfig().
Defaults match the prior hardcoded values, so this is behavior-neutral. Wires
the resolver through buffer-limits, tmux-manager (incl. a setHistoryLimit so a
settings change applies live), session, server, system-routes, session-routes,
schemas, and the config port. Adds 4 optional settings keys (terminalScrollback
Lines, tmuxHistoryLimit, terminalBufferMaxBytes, terminalBufferTrimBytes) with
bounds + a trim<=max cross-check.
This commit is contained in:
Aamer Akhter
2026-06-30 19:52:49 -04:00
parent abb6447f66
commit 8c0c94540c
13 changed files with 355 additions and 6 deletions
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src/config/buffer-limits.ts
+6 -4
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@@ -9,11 +9,13 @@
* - Terminal buffer: 2MB max × 20 = 40MB worst case
* - Text output: 1MB max × 20 = 20MB worst case
* - Messages: ~1KB each × 1000 × 20 = 20MB worst case
* - Total buffer overhead: ~80MB (acceptable for long-running server)
* - Total buffer overhead: ~80MB (acceptable for a long-running server)
*
* @module config/buffer-limits
*/
import { DEFAULT_TERMINAL_BUFFER_MAX_BYTES, DEFAULT_TERMINAL_BUFFER_TRIM_BYTES } from './terminal-history.js';
// ============================================================================
// Terminal Buffer Limits
// ============================================================================
@@ -21,17 +23,17 @@
/**
* Maximum terminal buffer size in characters.
* Contains raw terminal output with ANSI escape sequences.
* Reduced from 5MB to 2MB for better render performance.
* Sourced from terminal-history config (env/settings overridable).
* Override: CODEMAN_MAX_TERMINAL_BUFFER (bytes)
*/
export const MAX_TERMINAL_BUFFER_SIZE = parseInt(process.env.CODEMAN_MAX_TERMINAL_BUFFER || '') || 2 * 1024 * 1024;
export const MAX_TERMINAL_BUFFER_SIZE = DEFAULT_TERMINAL_BUFFER_MAX_BYTES;
/**
* Size to trim terminal buffer to when max is exceeded.
* Keeps the most recent portion to preserve context.
* Override: CODEMAN_TRIM_TERMINAL_TO (bytes)
*/
export const TRIM_TERMINAL_TO = parseInt(process.env.CODEMAN_TRIM_TERMINAL_TO || '') || 1.5 * 1024 * 1024;
export const TRIM_TERMINAL_TO = DEFAULT_TERMINAL_BUFFER_TRIM_BYTES;
// ============================================================================
// Text Output Buffer Limits