diff --git a/db/search/es/docs/courses/courses.txt b/db/search/es/docs/courses/courses.txt
new file mode 100644
index 000000000..3ee8c2d15
--- /dev/null
+++ b/db/search/es/docs/courses/courses.txt
@@ -0,0 +1,4 @@
+2024
+freeCodeCamp - Elasticsearch Course for Beginners 0:00 of 4:59:06
+    https://www.youtube.com/watch?v=a4HBKEda_F8
+    ! py-based
diff --git a/pl/java/features/stream/collectors.txt b/pl/java/features/stream/collectors.txt
deleted file mode 100644
index 48a55bb23..000000000
--- a/pl/java/features/stream/collectors.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/stream/Collector.html
-https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/IntSummaryStatistics.html
-
-2024
-https://www.baeldung.com/java-groupingby-collector
-https://www.baeldung.com/java-list-find-duplicates
-https://www.delftstack.com/howto/java/java-stream-distinct-by-property/
-2019
-https://4comprehension.com/an-ultimate-guide-to-java-stream-api-collectors/
-https://filippobuletto.github.io/stream-collector-fu/#
-2018
-https://dzone.com/articles/java-stream-collectors
diff --git a/pl/java/features/stream/features/collectors.txt b/pl/java/features/stream/features/collectors.txt
new file mode 100644
index 000000000..acb955b4d
--- /dev/null
+++ b/pl/java/features/stream/features/collectors.txt
@@ -0,0 +1,37 @@
+https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/stream/Collector.html
+https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/IntSummaryStatistics.html
+
+minBy()
+
+baeldung
+https://www.baeldung.com/java-groupingby-collector
+    Collectors.groupingBy(.,.)
+https://www.baeldung.com/java-list-find-duplicates
+2024
+CodeDecode - Most Complex Stream Operation in Java 8 0:00 of 38:10
+    https://www.youtube.com/watch?v=VGVS_i-XvxY
+https://www.delftstack.com/howto/java/java-stream-distinct-by-property/
+2019
+https://4comprehension.com/an-ultimate-guide-to-java-stream-api-collectors/
+    toUnmodifiableList/Set/Map
+    teeing()
+    counting()
+    reducing()
+    filtering()
+    flatMapping()
+    
+https://blog.filippobuletto.info/stream-collector-fu/#
+    Collector.of(
+      supplier()
+      accumulator()
+      combiner()
+      finisher()
+      Set<Characteristics> characteristics()
+    )
+2018
+https://dzone.com/articles/java-stream-collectors
+    collectingAndThen(...)
+    groupingBy()
+    mapping()
+    joining()
+    partitioningBy(...)
diff --git a/pl/java/features/stream/gatherer.txt b/pl/java/features/stream/features/gatherer.txt
similarity index 100%
rename from pl/java/features/stream/gatherer.txt
rename to pl/java/features/stream/features/gatherer.txt
diff --git a/pl/java/features/stream/features/unbound.txt b/pl/java/features/stream/features/unbound.txt
new file mode 100644
index 000000000..0633a05b7
--- /dev/null
+++ b/pl/java/features/stream/features/unbound.txt
@@ -0,0 +1 @@
+generate, iterate -> unbound streams
diff --git a/science/ai/code-assist/copilot/copilot.txt b/science/ai/code-assist/copilot/copilot.txt
index de0b45782..0db412880 100644
--- a/science/ai/code-assist/copilot/copilot.txt
+++ b/science/ai/code-assist/copilot/copilot.txt
@@ -1,5 +1,67 @@
-2023
-https://habr.com/ru/news/778144/
-https://habr.com/ru/news/774194/
-https://habr.com/ru/news/776926/
-    ! gpt4-turbo
+https://github.com/features/copilot
+https://github.com/features/copilot/plans
+
+https://github.com/settings/copilot
+
+https://docs.github.com/en/enterprise-cloud@latest/copilot/using-github-copilot/asking-github-copilot-questions-in-github
+
+https://marketplace.visualstudio.com/items?itemName=GitHub.copilot
+https://github.com/marketplace?type=apps&copilot_app=true
+
+https://code.visualstudio.com/docs/copilot/overview
+https://docs.github.com/en/copilot/using-github-copilot/getting-code-suggestions-in-your-ide-with-github-copilot?tool=vscode
+
+2024
+https://github.blog/news-insights/product-news/github-copilot-in-vscode-free/
+    https://www.youtube.com/watch?v=dMbOh114Vd4
+
+
+https://github.com/orgs/community/discussions/114673
+
+https://github.com/microsoft/vscode-copilot-release/issues/1188
+https://stackoverflow.com/questions/77374105/invalid-copilot-token-missing-token-403
+https://github.com/settings/tokens
+
+
+2025-01-09 22:24:46.067 [warning] [certificates] Failed to parse certificate # Zscaler Root CA
+ Error: error:0900006e:PEM routines:OPENSSL_internal:NO_START_LINE
+    at new X509Certificate (node:internal/crypto/x509:119:21)
+    at /home/iharh/.vscode/extensions/github.copilot-1.256.0/lib/src/network/certificateReaders.ts:79:36
+    at Array.filter (<anonymous>)
+    at Sae.removeExpiredCertificates (/home/iharh/.vscode/extensions/github.copilot-1.256.0/lib/src/network/certificateReaders.ts:77:32)
+    at Sae.getAllRootCAs (/home/iharh/.vscode/extensions/github.copilot-1.256.0/lib/src/network/certificateReaders.ts:68:38)
+    at pme.createSecureContext (/home/iharh/.vscode/extensions/github.copilot-1.256.0/lib/src/network/certificates.ts:47:23) {
+  opensslErrorStack: [
+    'error:0c00006d:ASN.1 encoding routines:OPENSSL_internal:DECODE_ERROR'
+  ],
+  library: 'PEM routines',
+  function: 'OPENSSL_internal',
+  reason: 'NO_START_LINE',
+  code: 'ERR_OSSL_PEM_NO_START_LINE'
+}
+2025-01-09 22:24:46.067 [warning] [certificates] Failed to parse certificate # Zscaler Root CA
+ Error: error:0900006e:PEM routines:OPENSSL_internal:NO_START_LINE
+    at new X509Certificate (node:internal/crypto/x509:119:21)
+    at /home/iharh/.vscode/extensions/github.copilot-1.256.0/lib/src/network/certificateReaders.ts:79:36
+    at Array.filter (<anonymous>)
+    at Sae.removeExpiredCertificates (/home/iharh/.vscode/extensions/github.copilot-1.256.0/lib/src/network/certificateReaders.ts:77:32)
+    at Sae.getAllRootCAs (/home/iharh/.vscode/extensions/github.copilot-1.256.0/lib/src/network/certificateReaders.ts:68:38)
+    at pme.createSecureContext (/home/iharh/.vscode/extensions/github.copilot-1.256.0/lib/src/network/certificates.ts:47:23) {
+  opensslErrorStack: [
+    'error:0c00006d:ASN.1 encoding routines:OPENSSL_internal:DECODE_ERROR'
+  ],
+  library: 'PEM routines',
+  function: 'OPENSSL_internal',
+  reason: 'NO_START_LINE',
+  code: 'ERR_OSSL_PEM_NO_START_LINE'
+}
+2025-01-09 22:24:46.067 [info] [certificates] Removed 2 expired certificates
+2025-01-09 22:24:46.538 [info] [auth] Invalid copilot token: missing token: 403 
+2025-01-09 22:24:46.830 [info] [auth] Invalid copilot token: missing token: 403 
+2025-01-09 22:24:46.832 [error] [auth] auth: CopilotAuthError: At this time, Copilot is not available in your location. You are currently logged in as iharh.
+    at authShowWarnings (/home/iharh/.vscode/extensions/github.copilot-1.256.0/extension/src/auth.ts:105:15)
+    at processTicksAndRejections (node:internal/process/task_queues:95:5)
+    at lie.getCopilotToken (/home/iharh/.vscode/extensions/github.copilot-1.256.0/extension/src/auth.ts:135:33) {
+  cause: undefined
+}
+2025-01-09 22:28:39.348 [info] [auth] Invalid copilot token: missing token: 403 
diff --git a/science/ai/code-assist/copilot/docs/articles.txt b/science/ai/code-assist/copilot/docs/articles.txt
index b4c89788f..8b3dec50d 100644
--- a/science/ai/code-assist/copilot/docs/articles.txt
+++ b/science/ai/code-assist/copilot/docs/articles.txt
@@ -4,3 +4,7 @@ https://www.microsoft.com/en-us/windows/copilot-plus-pcs
 https://techcrunch.com/2023/12/29/github-makes-copilot-chat-generally-available-letting-devs-ask-questions-about-code
 https://blog.logrocket.com/building-github-copilot-app/
 https://www.linkedin.com/pulse/my-annual-letter-leading-new-era-satya-nadella/
+https://habr.com/ru/news/778144/
+https://habr.com/ru/news/774194/
+https://habr.com/ru/news/776926/
+    ! gpt4-turbo