feat: create java streams skill

Author: martinfrancois

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,5 +1,5 @@
 name: Bug report
-description: Report a reproducible problem in the Java Optional skill, evals, docs, or automation.
+description: Report a reproducible problem in the Java Streams skill, evals, docs, or automation.
 title: "bug: "
 labels: ["bug"]
 body:
@@ -8,7 +8,7 @@ body:
       value: |
         Thanks for taking the time to report a bug. Don't include Tessl tokens, GitHub tokens, package manager tokens, private repository links, private eval artifacts, private registry/workspace links, local host paths, proprietary Java source, or screenshots/logs containing those values.
 
-        For suspected vulnerabilities, don't open a public issue. Use [private vulnerability reporting](https://github.com/martinfrancois/java-optionals-skill/security/advisories/new).
+        For suspected vulnerabilities, don't open a public issue. Use [private vulnerability reporting](https://github.com/martinfrancois/java-streams-skill/security/advisories/new).
   - type: textarea
     id: summary
     attributes:
@@ -69,7 +69,7 @@ body:
     id: java-example
     attributes:
       label: Minimal Java example
-      description: If the bug is about Optional guidance, paste the smallest sanitized Java example that shows it.
+      description: If the bug is about stream guidance, paste the smallest sanitized Java example that shows it.
       render: java
   - type: textarea
     id: logs
@@ -82,7 +82,7 @@ body:
     attributes:
       label: Tessl plugin version
       description: Paste the published plugin version, `tessl` output, or the commit SHA if known.
-      placeholder: "martinfrancois/java-optionals version or commit SHA: "
+      placeholder: "martinfrancois/java-streams version or commit SHA: "
   - type: input
     id: model
     attributes:

.github/ISSUE_TEMPLATE/config.yml

@@ -1,8 +1,8 @@
 blank_issues_enabled: false
 contact_links:
   - name: Security vulnerability
-    url: https://github.com/martinfrancois/java-optionals-skill/security/advisories/new
+    url: https://github.com/martinfrancois/java-streams-skill/security/advisories/new
     about: Report suspected vulnerabilities privately instead of opening a public issue.
   - name: Question or support discussion
-    url: https://github.com/martinfrancois/java-optionals-skill/discussions
+    url: https://github.com/martinfrancois/java-streams-skill/discussions
     about: Ask for help with installation, expected behavior, or how to use the skill.

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -16,7 +16,7 @@ body:
       label: Area
       options:
         - Skill behavior
-        - Optional example or reference material
+        - Stream example or reference material
         - Evals or scoring
         - README or docs
         - Tessl install or plugin metadata
@@ -35,7 +35,7 @@ body:
     id: examples
     attributes:
       label: Examples
-      description: Add a small Java Optional example, prompt, eval idea, or link if it helps explain the request.
+      description: Add a small Java Streams example, prompt, eval idea, or link if it helps explain the request.
       render: text
   - type: textarea
     id: alternatives

.github/pull_request_template.md

@@ -9,8 +9,6 @@ Describe the change in 2-5 bullet points.
 
 ## Change Type
 
-Choose all that apply.
-
 - [ ] Skill behavior
 - [ ] Evals or scoring
 - [ ] Documentation
@@ -28,57 +26,30 @@ Choose all that apply.
 Describe what a user, contributor, or maintainer can observe after this PR. If there is no
 user-visible change, write `None`.
 
-## Bug Fix Details
-
-For bug fixes or regressions, explain why the issue happened and what now prevents it from coming
-back. For other changes, write `N/A`.
-
-- Root cause:
-- Test, eval, or guardrail added:
-- If no test or eval was added, why not:
-
 ## Validation
 
-List the commands, manual checks, or hosted checks you ran. Include relevant failures that were fixed
-during the PR.
-
 Checks most contributors can run:
 
-- [ ] `python3 scripts/validate_skill.py skills/java-optionals`
+- [ ] `python3 scripts/validate_skill.py skills/java-streams`
 - [ ] `python3 scripts/validate_eval_criteria.py evals evals-reference`
 - [ ] `python3 -m py_compile scripts/validate_skill.py scripts/validate_eval_criteria.py`
 - [ ] `bash -n scripts/check_publish_dry_run.sh`
 - [ ] `tessl plugin lint .`
-- [ ] `markdownlint`, if Markdown changed
 - [ ] Manual rendered-doc or example review, if docs or examples changed
 
 Tessl-authenticated checks:
 
 - [ ] `bash scripts/check_publish_dry_run.sh .`
 - [ ] `tessl plugin publish --dry-run --bump patch .`
-- [ ] `tessl skill review --threshold 90 skills/java-optionals/SKILL.md`, if skill text or references changed
-- [ ] `tessl eval run --variant with-context --variant without-context .`, if skill behavior,
-      evals, or benchmark claims changed
-
-`bash scripts/check_publish_dry_run.sh .`, `tessl skill review`, and hosted Tessl evals require
-Tessl authentication. Hosted evals also require a linked Tessl project. If you can't run one of
-them, leave it unchecked and explain why in the details.
+- [ ] `tessl skill review --threshold 100 skills/java-streams/SKILL.md`, if skill text or references changed
+- [ ] `tessl eval run --agent claude:claude-sonnet-4-6 --variant without-context --variant with-context .`, if skill behavior, evals, or benchmark claims changed
 
 Details:
 
 ```text
 
 ```
 
-## Human Verification
-
-Describe what you tried manually and what result you saw. If the change cannot be tried manually,
-explain why.
-
-```text
-
-```
-
 ## Review Checklist
 
 - [ ] Docs updated, or N/A
@@ -89,36 +60,15 @@ explain why.
 - [ ] Explicit invocation prompts are labeled as explicit, or N/A
 - [ ] Headline criteria include compile/artifact checks, or N/A
 - [ ] Headline criteria include behavior correctness checks, or N/A
-- [ ] Runtime references contain no eval answer keys, scenario inventory, hosted run IDs, or fixed
-      score claims
+- [ ] Runtime references contain no eval answer keys, scenario inventory, hosted run IDs, or fixed score claims
 - [ ] Java baseline compatibility has been considered, or N/A
-- [ ] `OptionalInt`, `OptionalLong`, and `OptionalDouble` guidance has been considered, or N/A
-- [ ] Optional-producing stream terminals and collectors are covered, or N/A
-- [ ] Java 26 Javadocs were checked for Optional-family coverage, or N/A
-- [ ] Valid README package-runner instructions were preserved, or N/A
-- [ ] Tessl package commands match the verified plugin package format
+- [ ] Stream/collector ordering, null handling, and parallelism have been considered, or N/A
 - [ ] Full/reference eval reporting is not hidden or cherry-picked
 - [ ] Tessl checks were run, or unavailability is documented
 - [ ] PR title or squash title uses Conventional Commits
-- [ ] Redaction checked: no Tessl tokens, GitHub tokens, package manager tokens, private repository
-      links, private eval artifacts, private registry/workspace links, local host paths, or
-      proprietary Java source
+- [ ] Redaction checked: no Tessl tokens, GitHub tokens, package manager tokens, private repository links, private eval artifacts, private registry/workspace links, local host paths, or proprietary Java source
 
 ## AI Assistance (if used)
 
-<!--
-AI-assisted PRs are welcome. Mark this when an AI tool materially helped write, design, or edit the
-change so reviewers know what to look for.
--->
-
 - [ ] AI-assisted PR
 - [ ] I confirm I understand and reviewed the change
-
-<details>
-<summary>AI prompts / session logs (optional)</summary>
-
-```text
-
-```
-
-</details>

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
           version: "0.81.2"
 
       - name: Validate skill metadata
-        run: python3 scripts/validate_skill.py skills/java-optionals
+        run: python3 scripts/validate_skill.py skills/java-streams
 
       - name: Validate eval criteria
         run: python3 scripts/validate_eval_criteria.py evals evals-reference

.github/workflows/publish-tessl.yml

@@ -52,7 +52,7 @@ jobs:
 
       - name: Validate plugin before publish
         run: |
-          python3 scripts/validate_skill.py skills/java-optionals
+          python3 scripts/validate_skill.py skills/java-streams
           python3 scripts/validate_eval_criteria.py evals evals-reference
           python3 -m py_compile scripts/validate_skill.py scripts/validate_eval_criteria.py
           bash -n scripts/check_publish_dry_run.sh

.github/workflows/release-please.yml

@@ -53,7 +53,7 @@ jobs:
 
           pr_json="$(gh pr list \
             --state open \
-            --head release-please--branches--main--components--java-optionals \
+            --head release-please--branches--main--components--java-streams \
             --json title,headRefName \
             --jq '.[0] // empty')"
 
@@ -115,7 +115,7 @@ jobs:
           set_status pending "Release PR validation is running"
           trap 'code=$?; if [ "$code" -eq 0 ]; then set_status success "Release PR validation passed"; else set_status failure "Release PR validation failed"; fi' EXIT
 
-          python3 scripts/validate_skill.py skills/java-optionals
+          python3 scripts/validate_skill.py skills/java-streams
           python3 scripts/validate_eval_criteria.py evals evals-reference
           python3 -m py_compile scripts/validate_skill.py scripts/validate_eval_criteria.py
           bash -n scripts/check_publish_dry_run.sh

.github/workflows/skill-review.yml

@@ -15,7 +15,7 @@ on:
       - "README.md"
       - "CONTRIBUTING.md"
       - "docs/agents/**"
-      - "skills/java-optionals/**"
+      - "skills/java-streams/**"
 
 concurrency:
   group: skill-review-${{ github.workflow }}-${{ github.ref }}
@@ -44,4 +44,4 @@ jobs:
 
       - name: Review skill
         if: ${{ env.TESSL_TOKEN != '' }}
-        run: tessl skill review --threshold 90 skills/java-optionals/SKILL.md
+        run: tessl skill review --threshold 90 skills/java-streams/SKILL.md

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "1.0.0"
+  ".": "0.1.0"
 }

.tessl-plugin/plugin.json

@@ -1,11 +1,11 @@
 {
-  "name": "martinfrancois/java-optionals",
-  "version": "1.0.0",
-  "description": "Help AI coding agents use Java Optional well in new code and cleanups, without replacing one antipattern with another.",
-  "summary": "Help AI coding agents use Java Optional well in new code and cleanups, without replacing one antipattern with another.",
-  "repository": "https://github.com/martinfrancois/java-optionals-skill",
-  "homepage": "https://github.com/martinfrancois/java-optionals-skill#readme",
+  "name": "martinfrancois/java-streams",
+  "version": "0.1.0",
+  "description": "Help AI coding agents write, review, and refactor Java Stream and Collector code without common stream antipatterns.",
+  "summary": "Help AI coding agents write, review, and refactor Java Stream and Collector code without common stream antipatterns.",
+  "repository": "https://github.com/martinfrancois/java-streams-skill",
+  "homepage": "https://github.com/martinfrancois/java-streams-skill#readme",
   "license": "MIT",
   "entrypoint": "README.md",
-  "private": false
+  "private": true
 }