feat: add support for loading options from ~/.qrc

[racpast]

Description

This PR adds support for reading default CLI flags from a .qrc file in the user's home directory ($HOME or %USERPROFILE%), similar to .digrc.

Changes

• Added loadConfig() in main.go to parse the .qrc file.
• Prepended the parsed config arguments to the CLI arguments in driver(), ensuring explicit CLI flags still take precedence over the config file.
• Supported basic line-by-line flags and # or ; comments.

Verification

PS K:\q> cat ~\.qrc
+stats

PS K:\q> .\q.exe example.com -s 8.8.8.8
example.com. 5m TXT "_k2n1y4vw3qtb4skdx9e7dxt97qrmmq9"
example.com. 5m TXT "v=spf1 -all"
Stats:
Received 131 B from 8.8.8.8:53 in 1.0355s (13:20:24 02-19-2026 CST)
Opcode: QUERY Status: NOERROR ID 30595: Flags: qr rd ra (1 Q 2 A 0 N 1 E)
Stats:
Received 130 B from 8.8.8.8:53 in 1.0355s (13:20:24 02-19-2026 CST)
Opcode: QUERY Status: NOERROR ID 59012: Flags: qr rd ra (1 Q 0 A 1 N 1 E)
example.com. 5m A 104.18.26.120
example.com. 5m A 104.18.27.120
Stats:
Received 94 B from 8.8.8.8:53 in 1.0355s (13:20:24 02-19-2026 CST)
Opcode: QUERY Status: NOERROR ID 1356: Flags: qr rd ra (1 Q 2 A 0 N 1 E)
example.com. 4m54s AAAA 2606:4700::6812:1a78
example.com. 4m54s AAAA 2606:4700::6812:1b78
Stats:
Received 118 B from 8.8.8.8:53 in 1.0355s (13:20:24 02-19-2026 CST)
Opcode: QUERY Status: NOERROR ID 40537: Flags: qr rd ra (1 Q 2 A 0 N 1 E)
example.com. 4h13m43s NS elliott.ns.cloudflare.com.
example.com. 4h13m43s NS hera.ns.cloudflare.com.
Stats:
Received 137 B from 8.8.8.8:53 in 1.0355s (13:20:24 02-19-2026 CST)
Opcode: QUERY Status: NOERROR ID 12861: Flags: qr rd ra (1 Q 2 A 0 N 1 E)
example.com. 2m25s MX 0 .
Stats:
Received 66 B from 8.8.8.8:53 in 1.0355s (13:20:24 02-19-2026 CST)
Opcode: QUERY Status: NOERROR ID 48800: Flags: qr rd ra (1 Q 1 A 0 N 1 E)

PS K:\q> .\q.exe example.com -s 8.8.8.8 +nostats
example.com. 5m A 104.18.26.120
example.com. 5m A 104.18.27.120
example.com. 1m10s AAAA 2606:4700::6812:1a78
example.com. 1m10s AAAA 2606:4700::6812:1b78
example.com. 6h NS elliott.ns.cloudflare.com.
example.com. 6h NS hera.ns.cloudflare.com.
example.com. 2m15s MX 0 .
example.com. 5m TXT "_k2n1y4vw3qtb4skdx9e7dxt97qrmmq9"
example.com. 5m TXT "v=spf1 -all"

Related Issues

Fixes #125

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Summary by cubic

Add support for reading default CLI flags from a .qrc file in the user’s home directory. This lets users set persistent defaults while keeping explicit CLI flags in control.

• New Features
  • Load ~/.qrc (or %USERPROFILE%.qrc) and prepend parsed flags to argv to preserve precedence.
  • Support whitespace-separated flags per line; ignore blank lines and lines starting with # or ;.
  • Add debug/warn logs for load and read errors, and when options are loaded.

^{Written for commit 7de9545. Summary will update on new commits.}

[cubic-dev-ai]

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