diff --git a/engine.py b/engine.py
index c3ad724..eed7076 100644
--- a/engine.py
+++ b/engine.py
@@ -39,16 +39,51 @@
 # [SEC A END]
 
 # [SEC B START] Greetings
+GREETING = "Howdy from FEATURE"
+SIGNOFF = "Thanks,"
 GREETING = "Hello from MAIN v2"
 SIGNOFF = "Cheers,"
 def greet(name):
-    # main style greeting with signoff inline
-    return f"{GREETING} {name}! {SIGNOFF}"
+    # feature chooses different punctuation & placement
+    return f"{SIGNOFF} {name}. {GREETING}"
+# SEC B filler 001
+# SEC B filler 002
+# SEC B filler 003
+# SEC B filler 004
+# SEC B filler 005
+# SEC B filler 006
+# SEC B filler 007
+# SEC B filler 008
+# SEC B filler 009
+# SEC B filler 010
+# SEC B filler 011
+# SEC B filler 012
+# SEC B filler 013
+# SEC B filler 014
+# SEC B filler 015
+# SEC B filler 016
+# SEC B filler 017
+# SEC B filler 018
+# SEC B filler 019
+# SEC B filler 020
+# SEC B filler 021
+# SEC B filler 022
+# SEC B filler 023
+# SEC B filler 024
+# SEC B filler 025
+# SEC B filler 026
+# SEC B filler 027
+# SEC B filler 028
+# SEC B filler 029
+# SEC B filler 030
 # [SEC B END]
 
 # [SEC C START] Math helpers
 def add(a, b):
     return a + b
+
+def multiply(a, b):
+    return a * b
 # SEC C filler 001
 # SEC C filler 002
 # SEC C filler 003
@@ -82,9 +117,9 @@ def add(a, b):
 # [SEC C END]
 
 # [SEC D START] Logger
-LEVEL = "DEBUG"
+LEVEL = "WARN" jdnfljdnfbondsfgbsfggssfgn
 def get_logger():
-    fmt = "%(asctime)s [%(levelname)s] %(message)s"  # main adds timestamp
+    fmt = "[%(levelname)s] %(name)s: %(message)s"  # feature adds logger name
     return (LEVEL, fmt)
 # SEC D filler 001
 # SEC D filler 002
@@ -119,10 +154,10 @@ def get_logger():
 # [SEC D END]
 
 # [SEC E START] Versioning
-VERSION = "2.0.0"
+VERSION = "1.5.0"
 def compute_version():
-    # main appends -main
-    return VERSION + "-main"
+    # feature appends -feature
+    return VERSION + "-feature"
 # SEC E filler 001
 # SEC E filler 002
 # SEC E filler 003
@@ -156,7 +191,8 @@ def compute_version():
 # [SEC E END]
 
 # [SEC F START] Flags
-FEATURE_X = False
+FEATURE_X = True
+FEATURE_Y = False
 # SEC F filler 001
 # SEC F filler 002
 # SEC F filler 003
@@ -190,8 +226,8 @@ def compute_version():
 # [SEC F END]
 
 # [SEC G START] IO helpers
-def write_file(p, text, mode="w"):
-    open(p, mode).write(text)
+def write_file(p, text):
+    open(p, "w").write(text)
 # SEC G filler 001
 # SEC G filler 002
 # SEC G filler 003
@@ -226,7 +262,7 @@ def write_file(p, text, mode="w"):
 
 # [SEC H START] Main
 if __name__ == "__main__":
-    print(greet("MAIN"))
+    print(greet("world"))
 # SEC H filler 001
 # SEC H filler 002
 # SEC H filler 003
diff --git a/handbook.md b/handbook.md
index 726910c..ff3cd51 100644
--- a/handbook.md
+++ b/handbook.md
@@ -38,10 +38,10 @@ version: 1
 <!-- Ch1 filler 029 -->
 <!-- Ch1 filler 030 -->
 
-# Chapter 2: Engineering Standards
-- Use black/ruff (strict)
-- 88-col limit
-- Type hints enforced
+# Chapter 2: Coding Standards
+- Use black/ruff (lenient)
+- 100-col limit
+- Docstrings preferred, type hints optional
 <!-- Ch2 filler 001 -->
 <!-- Ch2 filler 002 -->
 <!-- Ch2 filler 003 -->
@@ -77,6 +77,8 @@ version: 1
 - main is protected
 - feature branches from main
 - rebase before merge
+- PRs must reference a ticket
+- Merge via squash
 <!-- Ch3 filler 001 -->
 <!-- Ch3 filler 002 -->
 <!-- Ch3 filler 003 -->
@@ -144,10 +146,10 @@ version: 1
 <!-- Ch4 filler 030 -->
 
 # Chapter 5: Release Process
-- bump version (semver)
-- tag release
+- version bump via tool
+- tag &amp; sign release
 - publish artifacts
-- smoke test in staging
+- canary 10% for 1h
 <!-- Ch5 filler 001 -->
 <!-- Ch5 filler 002 -->
 <!-- Ch5 filler 003 -->
@@ -181,8 +183,8 @@ version: 1
 
 # Chapter 6: Incident Response
 - SEV1 page immediately
-- Initial RCA within 24h
-- Full postmortem within 72h
+- RCA start within 48h
+- Postmortem by end of week
 <!-- Ch6 filler 001 -->
 <!-- Ch6 filler 002 -->
 <!-- Ch6 filler 003 -->
@@ -251,7 +253,6 @@ version: 1
 # Chapter 8: FAQ
 - Q: Who owns releases? A: Dev Infra
 - Q: What’s the SLA? A: 99.9%
-- Q: Do we support LTS? A: 12 months
 <!-- Ch8 filler 001 -->
 <!-- Ch8 filler 002 -->
 <!-- Ch8 filler 003 -->
diff --git a/pipeline.sql b/pipeline.sql
index 6711a85..1c3bd50 100644
--- a/pipeline.sql
+++ b/pipeline.sql
@@ -2,8 +2,6 @@
 
 -- [STAGE 1 START] prepare users
 CREATE TEMP TABLE t_users AS
--- main adds constraint
--- (simulated) ALTER TABLE t_users ADD PRIMARY KEY (id);
 SELECT id, name, active
 FROM users
 WHERE deleted = false;
@@ -118,7 +116,8 @@ LEFT JOIN purchases p ON p.user_id = a.id;
 CREATE TEMP TABLE t_rev AS
 SELECT id, SUM(amount * 1.05) AS revenue  -- main applies uplift
 FROM t_join
-GROUP BY id;
+GROUP BY id
+HAVING SUM(amount) > 0;
 -- S4 filler 001
 -- S4 filler 002
 -- S4 filler 003
@@ -152,8 +151,8 @@ GROUP BY id;
 -- [STAGE 4 END]
 
 -- [STAGE 5 START] write outputs
-INSERT INTO reporting.users_daily (id, name, revenue, dt)
-SELECT j.id, j.name, r.revenue, CURRENT_DATE
+INSERT INTO reporting.users_daily (id, name, revenue, yyyymm)
+SELECT j.id, j.name, r.revenue, TO_CHAR(CURRENT_DATE, 'YYYYMM')
 FROM t_join j
 JOIN t_rev r USING (id);
 -- main keeps dt as DATE partition
@@ -190,7 +189,7 @@ JOIN t_rev r USING (id);
 -- [STAGE 5 END]
 
 -- [STAGE 6 START] finalize
-VACUUM ANALYZE;
+ANALYZE VERBOSE;  -- feature alternative finalization
 -- S6 filler 001
 -- S6 filler 002
 -- S6 filler 003