feat: DTail fork — server/client feature development

Squashed development of the snonux/dtail fork's product code (internal/, cmd/)
since diverging from mimecast/dtail. Major areas:

- Read/output path: the former "turbo" channel-less path is now the single,
  default server-side read/output path for cat/grep/tail and MapReduce; the old
  channel-based path and its config/env toggles were removed.
- MapReduce: single aggregate implementation (server + serverless) fed directly
  by a processor pipeline, with input-exhausted finalization via the shutdown
  coordinator; high-concurrency and data-race fixes.
- Journal source reads (journal:unit.service) via journalctl, Linux-gated behind
  a journal-v1 capability.
- Auth-key fast reconnect: in-memory per-user public-key cache with TTL/max-keys,
  registered over an authenticated session (AUTHKEY), checked before
  authorized_keys.
- Interactive query reload (--interactive-query) with SESSION START/UPDATE
  generation boundaries and capability negotiation.
- Client-side deadlines: --timeout / --shutdownAfter as context deadlines;
  follow shutdown handling.
- Client logging: diagnostics-only daily log by default, opt-in payload tee via
  --log-payload.
- Numerous correctness fixes (buffer-pool double-recycle races, EOF-sentinel
  leaks, glob-expansion cap, TOCTOU in CSV parsing) with accompanying unit tests.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

1 files changed, 7 insertions, 8 deletions

diff --git a/internal/version/version.go b/internal/version/version.go
index c8ad394..bffdccd 100644
--- a/internal/version/version.go
+++ b/internal/version/version.go
@@ -5,7 +5,6 @@ import (
 	"os"
 
 	"github.com/mimecast/dtail/internal/color"
-	"github.com/mimecast/dtail/internal/config"
 	"github.com/mimecast/dtail/internal/protocol"
 )
 
@@ -13,7 +12,7 @@ const (
 	// Name of DTail.
 	Name string = "DTail"
 	// Version of DTail.
-	Version string = "4.3.2"
+	Version string = "4.3.2-ng"
 	// Additional information for DTail
 	Additional string = "Have a lot of fun!"
 )
@@ -25,8 +24,8 @@ func String() string {
 }
 
 // PaintedString is a prettier string representation of the DTail version.
-func PaintedString() string {
-	if !config.Client.TermColorsEnable {
+func PaintedString(colorsEnabled bool) string {
+	if !colorsEnabled {
 		return String()
 	}
 
@@ -43,12 +42,12 @@ func PaintedString() string {
 }
 
 // Print the version.
-func Print() {
-	fmt.Println(PaintedString())
+func Print(colorsEnabled bool) {
+	fmt.Println(PaintedString(colorsEnabled))
 }
 
 // PrintAndExit prints the program version and exists.
-func PrintAndExit() {
-	Print()
+func PrintAndExit(colorsEnabled bool) {
+	Print(colorsEnabled)
 	os.Exit(0)
 }