chore: increase SOURCEBOT_CHAT_MAX_STEP_COUNT default to 100 (#1017)

* chore: increase SOURCEBOT_CHAT_MAX_STEP_COUNT default to 100

Allows chat sessions to perform more autonomous steps before stopping.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

* chore: update CHANGELOG for PR #1017

---------

Co-authored-by: Claude Haiku 4.5 <noreply@anthropic.com>

Author: brendan-kellam

CHANGELOG.md

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+- Increased `SOURCEBOT_CHAT_MAX_STEP_COUNT` default from 20 to 100 to allow agents to perform more autonomous steps. [#1017](https://github.com/sourcebot-dev/sourcebot/pull/1017)
+
 ## [4.15.9] - 2026-03-17
 
 ### Added

packages/shared/src/env.server.ts

@@ -238,7 +238,7 @@ const options = {
         AWS_REGION: z.string().optional(),
 
         SOURCEBOT_CHAT_MODEL_TEMPERATURE: numberSchema.default(0.3),
-        SOURCEBOT_CHAT_MAX_STEP_COUNT: numberSchema.default(20),
+        SOURCEBOT_CHAT_MAX_STEP_COUNT: numberSchema.default(100),
 
         DEBUG_WRITE_CHAT_MESSAGES_TO_FILE: booleanSchema.default('false'),