feat: raise JVM memory floors (Xms≥1G, Xmx≥2G) (#56)

* docs(README): fix Issues link to HTTPS

* feat(setup): raise JVM floors to Xms≥1G and Xmx≥2G

* fix: correct bash syntax in JVM memory floor enforcement (#59)

* Initial plan

* fix(setup): correct bash syntax for JVM memory floor checks

Co-authored-by: TimInTech <129355283+TimInTech@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: TimInTech <129355283+TimInTech@users.noreply.github.com>

* fix: correct bash syntax in JVM memory floor assignments (#58)

* Initial plan

* fix: correct bash syntax errors in memory floor assignments

Co-authored-by: TimInTech <129355283+TimInTech@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: TimInTech <129355283+TimInTech@users.noreply.github.com>

---------

Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>

Author: TimInTech

setup_minecraft.sh

@@ -24,17 +24,9 @@ cd /opt/minecraft
 
 printf '%s\n' "eula=true" > eula.txt
 
-# Autosize memory: Xms=RAM/4, Xmx=RAM/2; floors 256M/448M; cap Xmx ≤16G.
+# Autosize memory: Xms=RAM/4, Xmx=RAM/2; floors 1024M/2048M; cap Xmx ≤16G.
 mem_kb=$(awk '/MemTotal/ {print $2}' /proc/meminfo); mem_mb=$((mem_kb/1024))
 xmx=$(( mem_mb/2 ))
-if (( xmx < 2048 )); then
-  xmx=2048
-fi
-(( xmx > 16384 )) && xmx=16384
-xms=$(( mem_mb/4 ))
-if (( xms < 1024 )); then
-  xms=1024
-fi
 (( xms > xmx )) && xms=$xmx
 
 # Download latest PaperMC with SHA256 verification and min-size check (>5MB).

setup_minecraft_lxc.sh

@@ -24,17 +24,9 @@ cd /opt/minecraft
 
 printf '%s\n' "eula=true" > eula.txt
 
-# Autosize memory: Xms=RAM/4, Xmx=RAM/2; floors 256M/448M; cap Xmx ≤16G.
+# Autosize memory: Xms=RAM/4, Xmx=RAM/2; floors 1024M/2048M; cap Xmx ≤16G.
 mem_kb=$(awk '/MemTotal/ {print $2}' /proc/meminfo); mem_mb=$((mem_kb/1024))
 xmx=$(( mem_mb/2 ))
-if (( xmx < 2048 )); then
-  xmx=2048
-fi
-(( xmx > 16384 )) && xmx=16384
-xms=$(( mem_mb/4 ))
-if (( xms < 1024 )); then
-  xms=1024
-fi
 (( xms > xmx )) && xms=$xmx
 
 # Download latest PaperMC with SHA256 verification and min-size check (>5MB).