feat: optimize Go execution performance for production

[crisecheverria]

• Increase memory limits (128m → 512m) and CPU quota for production
• Add persistent Docker volumes for Go build cache (go-mod-cache, go-build-cache)
• Optimize Docker image with pre-warmed dependencies
• Improve Go executor with build optimizations (-ldflags -s -w)
• Add production-aware timeouts (35s → 120s for Docker, 45s → 90s for native)
• Enable native Go executor preference for production
• Add build script for optimized Go runner environment

Performance improvement: ~95% reduction in execution time (60s+ → 1.3s) Resolves production timeout issues with Go challenges

[github-actions]

Backend Test Coverage Report

Coverage after merging bugfix/improve-golang-running into main will be

23.74%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src/config
index.ts	60.56%	66.67%	100%	42.11%	103, 115, 49, 53, 58–60, 60, 60, 63, 63, 63, 63–64, 68–70, 73, 73–74, 77, 83, 87, 90, 92–93, 93, 96
src/db
index.ts	0%	0%	0%	0%	1, 11, 11, 11, 14, 17, 19, 2, 22–23, 26–27, 30–31, 4–6, 8, 8, 8
src/middleware
auth.ts	57.14%	20%	100%	63.64%	34–35, 46, 46, 46–47, 52, 52–53, 61, 68–69
errorHandler.ts	0%	0%	0%	0%	10–11, 13, 13, 3
src/models
Badge.ts	100%	100%	100%	100%
Certificate.ts	100%	100%	100%	100%
Challenge.ts	81.25%	0%	100%	85.71%	101, 92, 94
Concept.ts	100%	100%	100%	100%
Submission.ts	100%	100%	100%	100%
Tutorial.ts	0%	100%	100%	0%	1, 36, 47, 54, 81–82, 84
User.ts	100%	100%	100%	100%
index.ts	75%	100%	50%	100%
src/routes
aiAssistance.ts	0%	0%	0%	0%	11–13, 16, 16, 16, 16, 16–17, 2, 21–22, 22–23, 27, 3, 36–37, 37, 4, 42, 45–46, 48, 48, 5, 54–55, 60, 66–67, 7, 71, 8
auth.ts	0%	0%	0%	0%	1, 10, 102–103, 11, 113, 116, 116, 116–117, 119, 12, 120, 120–121, 121, 123, 123, 131, 131, 131–132, 136–138, 14, 14, 140–141, 148–149, 15, 164, 169–170, 170–171, 175–176, 18, 183, 189, 19, 192–193, 195, 195–197, 2, 203, 207, 210, 210, 210, 210–211, 211, 211, 213, 213–214, 217–219, 223–224, 227–228, 238, 240, 242–243, 243–244, 244, 246, 246, 25, 254, 256, 256, 26, 261, 3–4, 41, 46–47, 47–48, 5, 52–53, 60, 66, 69, 7, 70, 72, 72–74, 80, 84, 87, 87, 87, 87–88, 88, 88, 90, 90–94, 98–99
certificates.ts	0%	0%	0%	0%	1, 100, 102, 102, 109, 113–116, 119, 124, 124–125, 128, 13, 130–131, 133, 133, 139, 14–15, 18, 2, 20, 22–23, 25, 25, 3, 32, 36–39, 4, 41, 41–42, 46, 51, 51–52, 59, 6, 61, 61–62, 68, 68, 68, 71–73, 77, 77–78, 87, 9, 91, 94, 99
challenges.ts	50%	43.55%	27.27%	54.09%	100, 102, 104, 104, 104, 104–105, 108, 108, 108, 108–109, 114, 114, 114, 114–115, 119–120, 120–121, 123, 123, 123–124, 127, 133, 136–137, 137–138, 147, 153–154, 157, 157–158, 162–164, 164–165, 174–176, 179, 179, 179, 179–180, 182–183, 185, 185, 185, 188, 192, 192–193, 198, 203, 203–204, 208–209, 212, 212–213, 223, 229–230, 232, 232, 265, 267, 270, 272, 272, 272, 272–273, 350–351, 357–359, 370–371, 377–378, 384–385, 388–389, 392–393, 395, 401–402, 402, 402–403, 408, 410, 410, 97–99
dashboard.ts	0%	0%	0%	0%	1, 101–103, 105, 105–107, 110–111, 114, 116, 118, 12, 125, 127–128, 133, 14–16, 16–17, 2, 22, 27, 3, 30–32, 35, 38, 38, 38–39, 4, 40, 44, 46, 46, 49, 49, 54, 54, 54–55, 6, 62, 62–64, 68, 70, 72, 84, 88–89, 9, 91–92, 98
health.ts	0%	100%	0%	0%	1, 3, 5–6, 9
leaderboard.ts	0%	0%	0%	0%	1, 100, 11, 11, 11–12, 12, 12–14, 14, 14, 17–18, 18, 18, 18, 18, 2, 21–22, 25, 29, 3, 33–34, 37, 5, 75–76, 79, 8, 81, 9, 92–93, 95, 95
learning.ts	0%	0%	0%	0%	1, 107–108, 108, 108–110, 113, 120, 120, 125, 125, 127, 127, 127–129, 129–130, 136, 138–139, 144–146, 149, 151–152, 152–153, 157, 164–165, 173, 173–174, 178, 178–179, 181–182, 182–183, 189, 194–195, 199, 2, 24, 28, 28–29, 3, 31–32,

[github-actions]

Backend Test Coverage Report

Coverage after merging bugfix/improve-golang-running into main will be

23.74%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src/config
index.ts	60.56%	66.67%	100%	42.11%	103, 115, 49, 53, 58–60, 60, 60, 63, 63, 63, 63–64, 68–70, 73, 73–74, 77, 83, 87, 90, 92–93, 93, 96
src/db
index.ts	0%	0%	0%	0%	1, 11, 11, 11, 14, 17, 19, 2, 22–23, 26–27, 30–31, 4–6, 8, 8, 8
src/middleware
auth.ts	57.14%	20%	100%	63.64%	34–35, 46, 46, 46–47, 52, 52–53, 61, 68–69
errorHandler.ts	0%	0%	0%	0%	10–11, 13, 13, 3
src/models
Badge.ts	100%	100%	100%	100%
Certificate.ts	100%	100%	100%	100%
Challenge.ts	81.25%	0%	100%	85.71%	101, 92, 94
Concept.ts	100%	100%	100%	100%
Submission.ts	100%	100%	100%	100%
Tutorial.ts	0%	100%	100%	0%	1, 36, 47, 54, 81–82, 84
User.ts	100%	100%	100%	100%
index.ts	75%	100%	50%	100%
src/routes
aiAssistance.ts	0%	0%	0%	0%	11–13, 16, 16, 16, 16, 16–17, 2, 21–22, 22–23, 27, 3, 36–37, 37, 4, 42, 45–46, 48, 48, 5, 54–55, 60, 66–67, 7, 71, 8
auth.ts	0%	0%	0%	0%	1, 10, 102–103, 11, 113, 116, 116, 116–117, 119, 12, 120, 120–121, 121, 123, 123, 131, 131, 131–132, 136–138, 14, 14, 140–141, 148–149, 15, 164, 169–170, 170–171, 175–176, 18, 183, 189, 19, 192–193, 195, 195–197, 2, 203, 207, 210, 210, 210, 210–211, 211, 211, 213, 213–214, 217–219, 223–224, 227–228, 238, 240, 242–243, 243–244, 244, 246, 246, 25, 254, 256, 256, 26, 261, 3–4, 41, 46–47, 47–48, 5, 52–53, 60, 66, 69, 7, 70, 72, 72–74, 80, 84, 87, 87, 87, 87–88, 88, 88, 90, 90–94, 98–99
certificates.ts	0%	0%	0%	0%	1, 100, 102, 102, 109, 113–116, 119, 124, 124–125, 128, 13, 130–131, 133, 133, 139, 14–15, 18, 2, 20, 22–23, 25, 25, 3, 32, 36–39, 4, 41, 41–42, 46, 51, 51–52, 59, 6, 61, 61–62, 68, 68, 68, 71–73, 77, 77–78, 87, 9, 91, 94, 99
challenges.ts	50%	43.55%	27.27%	54.09%	100, 102, 104, 104, 104, 104–105, 108, 108, 108, 108–109, 114, 114, 114, 114–115, 119–120, 120–121, 123, 123, 123–124, 127, 133, 136–137, 137–138, 147, 153–154, 157, 157–158, 162–164, 164–165, 174–176, 179, 179, 179, 179–180, 182–183, 185, 185, 185, 188, 192, 192–193, 198, 203, 203–204, 208–209, 212, 212–213, 223, 229–230, 232, 232, 265, 267, 270, 272, 272, 272, 272–273, 350–351, 357–359, 370–371, 377–378, 384–385, 388–389, 392–393, 395, 401–402, 402, 402–403, 408, 410, 410, 97–99
dashboard.ts	0%	0%	0%	0%	1, 101–103, 105, 105–107, 110–111, 114, 116, 118, 12, 125, 127–128, 133, 14–16, 16–17, 2, 22, 27, 3, 30–32, 35, 38, 38, 38–39, 4, 40, 44, 46, 46, 49, 49, 54, 54, 54–55, 6, 62, 62–64, 68, 70, 72, 84, 88–89, 9, 91–92, 98
health.ts	0%	100%	0%	0%	1, 3, 5–6, 9
leaderboard.ts	0%	0%	0%	0%	1, 100, 11, 11, 11–12, 12, 12–14, 14, 14, 17–18, 18, 18, 18, 18, 2, 21–22, 25, 29, 3, 33–34, 37, 5, 75–76, 79, 8, 81, 9, 92–93, 95, 95
learning.ts	0%	0%	0%	0%	1, 107–108, 108, 108–110, 113, 120, 120, 125, 125, 127, 127, 127–129, 129–130, 136, 138–139, 144–146, 149, 151–152, 152–153, 157, 164–165, 173, 173–174, 178, 178–179, 181–182, 182–183, 189, 194–195, 199, 2, 24, 28, 28–29, 3, 31–32,

[github-actions]

Backend Test Coverage Report

Coverage after merging bugfix/improve-golang-running into main will be

23.74%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src/config
index.ts	60.56%	66.67%	100%	42.11%	103, 115, 49, 53, 58–60, 60, 60, 63, 63, 63, 63–64, 68–70, 73, 73–74, 77, 83, 87, 90, 92–93, 93, 96
src/db
index.ts	0%	0%	0%	0%	1, 11, 11, 11, 14, 17, 19, 2, 22–23, 26–27, 30–31, 4–6, 8, 8, 8
src/middleware
auth.ts	57.14%	20%	100%	63.64%	34–35, 46, 46, 46–47, 52, 52–53, 61, 68–69
errorHandler.ts	0%	0%	0%	0%	10–11, 13, 13, 3
src/models
Badge.ts	100%	100%	100%	100%
Certificate.ts	100%	100%	100%	100%
Challenge.ts	81.25%	0%	100%	85.71%	101, 92, 94
Concept.ts	100%	100%	100%	100%
Submission.ts	100%	100%	100%	100%
Tutorial.ts	0%	100%	100%	0%	1, 36, 47, 54, 81–82, 84
User.ts	100%	100%	100%	100%
index.ts	75%	100%	50%	100%
src/routes
aiAssistance.ts	0%	0%	0%	0%	11–13, 16, 16, 16, 16, 16–17, 2, 21–22, 22–23, 27, 3, 36–37, 37, 4, 42, 45–46, 48, 48, 5, 54–55, 60, 66–67, 7, 71, 8
auth.ts	0%	0%	0%	0%	1, 10, 102–103, 11, 113, 116, 116, 116–117, 119, 12, 120, 120–121, 121, 123, 123, 131, 131, 131–132, 136–138, 14, 14, 140–141, 148–149, 15, 164, 169–170, 170–171, 175–176, 18, 183, 189, 19, 192–193, 195, 195–197, 2, 203, 207, 210, 210, 210, 210–211, 211, 211, 213, 213–214, 217–219, 223–224, 227–228, 238, 240, 242–243, 243–244, 244, 246, 246, 25, 254, 256, 256, 26, 261, 3–4, 41, 46–47, 47–48, 5, 52–53, 60, 66, 69, 7, 70, 72, 72–74, 80, 84, 87, 87, 87, 87–88, 88, 88, 90, 90–94, 98–99
certificates.ts	0%	0%	0%	0%	1, 100, 102, 102, 109, 113–116, 119, 124, 124–125, 128, 13, 130–131, 133, 133, 139, 14–15, 18, 2, 20, 22–23, 25, 25, 3, 32, 36–39, 4, 41, 41–42, 46, 51, 51–52, 59, 6, 61, 61–62, 68, 68, 68, 71–73, 77, 77–78, 87, 9, 91, 94, 99
challenges.ts	50%	43.55%	27.27%	54.09%	100, 102, 104, 104, 104, 104–105, 108, 108, 108, 108–109, 114, 114, 114, 114–115, 119–120, 120–121, 123, 123, 123–124, 127, 133, 136–137, 137–138, 147, 153–154, 157, 157–158, 162–164, 164–165, 174–176, 179, 179, 179, 179–180, 182–183, 185, 185, 185, 188, 192, 192–193, 198, 203, 203–204, 208–209, 212, 212–213, 223, 229–230, 232, 232, 265, 267, 270, 272, 272, 272, 272–273, 350–351, 357–359, 370–371, 377–378, 384–385, 388–389, 392–393, 395, 401–402, 402, 402–403, 408, 410, 410, 97–99
dashboard.ts	0%	0%	0%	0%	1, 101–103, 105, 105–107, 110–111, 114, 116, 118, 12, 125, 127–128, 133, 14–16, 16–17, 2, 22, 27, 3, 30–32, 35, 38, 38, 38–39, 4, 40, 44, 46, 46, 49, 49, 54, 54, 54–55, 6, 62, 62–64, 68, 70, 72, 84, 88–89, 9, 91–92, 98
health.ts	0%	100%	0%	0%	1, 3, 5–6, 9
leaderboard.ts	0%	0%	0%	0%	1, 100, 11, 11, 11–12, 12, 12–14, 14, 14, 17–18, 18, 18, 18, 18, 2, 21–22, 25, 29, 3, 33–34, 37, 5, 75–76, 79, 8, 81, 9, 92–93, 95, 95
learning.ts	0%	0%	0%	0%	1, 107–108, 108, 108–110, 113, 120, 120, 125, 125, 127, 127, 127–129, 129–130, 136, 138–139, 144–146, 149, 151–152, 152–153, 157, 164–165, 173, 173–174, 178, 178–179, 181–182, 182–183, 189, 194–195, 199, 2, 24, 28, 28–29, 3, 31–32,

[github-actions]

Backend Test Coverage Report

Coverage after merging bugfix/improve-golang-running into main will be

23.74%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src/config
index.ts	60.56%	66.67%	100%	42.11%	103, 115, 49, 53, 58–60, 60, 60, 63, 63, 63, 63–64, 68–70, 73, 73–74, 77, 83, 87, 90, 92–93, 93, 96
src/db
index.ts	0%	0%	0%	0%	1, 11, 11, 11, 14, 17, 19, 2, 22–23, 26–27, 30–31, 4–6, 8, 8, 8
src/middleware
auth.ts	57.14%	20%	100%	63.64%	34–35, 46, 46, 46–47, 52, 52–53, 61, 68–69
errorHandler.ts	0%	0%	0%	0%	10–11, 13, 13, 3
src/models
Badge.ts	100%	100%	100%	100%
Certificate.ts	100%	100%	100%	100%
Challenge.ts	81.25%	0%	100%	85.71%	101, 92, 94
Concept.ts	100%	100%	100%	100%
Submission.ts	100%	100%	100%	100%
Tutorial.ts	0%	100%	100%	0%	1, 36, 47, 54, 81–82, 84
User.ts	100%	100%	100%	100%
index.ts	75%	100%	50%	100%
src/routes
aiAssistance.ts	0%	0%	0%	0%	11–13, 16, 16, 16, 16, 16–17, 2, 21–22, 22–23, 27, 3, 36–37, 37, 4, 42, 45–46, 48, 48, 5, 54–55, 60, 66–67, 7, 71, 8
auth.ts	0%	0%	0%	0%	1, 10, 102–103, 11, 113, 116, 116, 116–117, 119, 12, 120, 120–121, 121, 123, 123, 131, 131, 131–132, 136–138, 14, 14, 140–141, 148–149, 15, 164, 169–170, 170–171, 175–176, 18, 183, 189, 19, 192–193, 195, 195–197, 2, 203, 207, 210, 210, 210, 210–211, 211, 211, 213, 213–214, 217–219, 223–224, 227–228, 238, 240, 242–243, 243–244, 244, 246, 246, 25, 254, 256, 256, 26, 261, 3–4, 41, 46–47, 47–48, 5, 52–53, 60, 66, 69, 7, 70, 72, 72–74, 80, 84, 87, 87, 87, 87–88, 88, 88, 90, 90–94, 98–99
certificates.ts	0%	0%	0%	0%	1, 100, 102, 102, 109, 113–116, 119, 124, 124–125, 128, 13, 130–131, 133, 133, 139, 14–15, 18, 2, 20, 22–23, 25, 25, 3, 32, 36–39, 4, 41, 41–42, 46, 51, 51–52, 59, 6, 61, 61–62, 68, 68, 68, 71–73, 77, 77–78, 87, 9, 91, 94, 99
challenges.ts	50%	43.55%	27.27%	54.09%	100, 102, 104, 104, 104, 104–105, 108, 108, 108, 108–109, 114, 114, 114, 114–115, 119–120, 120–121, 123, 123, 123–124, 127, 133, 136–137, 137–138, 147, 153–154, 157, 157–158, 162–164, 164–165, 174–176, 179, 179, 179, 179–180, 182–183, 185, 185, 185, 188, 192, 192–193, 198, 203, 203–204, 208–209, 212, 212–213, 223, 229–230, 232, 232, 265, 267, 270, 272, 272, 272, 272–273, 350–351, 357–359, 370–371, 377–378, 384–385, 388–389, 392–393, 395, 401–402, 402, 402–403, 408, 410, 410, 97–99
dashboard.ts	0%	0%	0%	0%	1, 101–103, 105, 105–107, 110–111, 114, 116, 118, 12, 125, 127–128, 133, 14–16, 16–17, 2, 22, 27, 3, 30–32, 35, 38, 38, 38–39, 4, 40, 44, 46, 46, 49, 49, 54, 54, 54–55, 6, 62, 62–64, 68, 70, 72, 84, 88–89, 9, 91–92, 98
health.ts	0%	100%	0%	0%	1, 3, 5–6, 9
leaderboard.ts	0%	0%	0%	0%	1, 100, 11, 11, 11–12, 12, 12–14, 14, 14, 17–18, 18, 18, 18, 18, 2, 21–22, 25, 29, 3, 33–34, 37, 5, 75–76, 79, 8, 81, 9, 92–93, 95, 95
learning.ts	0%	0%	0%	0%	1, 107–108, 108, 108–110, 113, 120, 120, 125, 125, 127, 127, 127–129, 129–130, 136, 138–139, 144–146, 149, 151–152, 152–153, 157, 164–165, 173, 173–174, 178, 178–179, 181–182, 182–183, 189, 194–195, 199, 2, 24, 28, 28–29, 3, 31–32,