Release 1.1.0: dependency refresh and release documentation

[pambrose]

Bundles the two test-reliability fixes that landed after 1.0.1 (#19, #20) with a dependency refresh and the documentation needed to cut the release. No challenge content changed.

Dependencies

	from	to
readingbat-core	3.3.1	3.4.0
Ktor	3.5.1	3.6.0
Kotest	6.2.3	6.2.5
kotlinter	5.6.0	5.7.0
detekt	2.0.0-alpha.5	2.0.0-alpha.6
versions plugin	0.57.0	0.64.0
Gradle wrapper	9.6.1	9.7.1

Kotlin stays at 2.4.10, common-utils at 3.2.2, and the JVM toolchain at 25.

.gitattributes

The repository had never had one. gradlew.bat had been committed with LF endings, which cmd.exe mis-parses around labels and multi-line set blocks — a latent break that Linux-only CI would never have surfaced. Stored blobs are now normalized to LF, /gradlew stays eol=lf, *.bat is checked out eol=crlf, and *.jar is pinned binary. git add --renormalize . was a no-op, so no existing blob changed.

Documentation

Audited against the repo rather than just appended to:

• CHANGELOG.md — [Unreleased] becomes [1.1.0] - 2026-09-21, matching how 1.0.1 was cut (no empty Unreleased left behind), plus the previously undocumented dependency and wrapper bumps.
• RELEASE_NOTES.md — v1.1.0 narrative covering the runTest 60s-ceiling diagnosis, the per-language split, the coverage guard, and the toolchain refresh.
• README.md — the Testing section was stale: it still described the suite as using testApplication, which is precisely what Give the challenge sweeps an explicit timeout #20 moved away from. Now documents the per-language sweeps, the explicit 5-minute timeout, and the coverage guard.
• CLAUDE.md, llms.txt — record the two constraints that are easy to break when editing the suite: await runTestApplication directly rather than calling testApplication, and a language added to Content.kt needs its own sweep. llms.txt keeps the 1.0.1 discipline of pointing at libs.versions.toml rather than restating versions that drift.

Verification

./gradlew --rerun-tasks check on the new dependency set:

ContentTests > Test all Java challenges PASSED
ContentTests > Test all Kotlin challenges PASSED
ContentTests > Per-language tests cover every challenge PASSED
ContentTests > Test with correct answers PASSED
ContentTests > Test individual challenges PASSED

BUILD SUCCESSFUL in 28s

5 tests, 0 failures, with kotlinter and detekt clean. ./gradlew properties reports version: 1.1.0, and every Makefile target named in the docs exists.

Note on the release date

CHANGELOG.md dates 1.1.0 as 2026-09-21 (today), but the commits it describes landed 2026-08-01 — the work sat uncommitted for seven weeks. Say the word if you'd rather date it to when the work happened.

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